├── .gitignore
├── bin.js
├── build
    ├── __tests__
    │   ├── bin.d.ts
    │   ├── bin.js
    │   ├── bin.js.map
    │   ├── index.d.ts
    │   ├── index.js
    │   └── index.js.map
    ├── index.d.ts
    ├── index.js
    └── index.js.map
├── changelog.md
├── doc
    └── schema.md
├── examples
    ├── hackernews.graphql
    └── source.graphql
├── package.json
├── readme.md
├── screenshot.png
├── src
    ├── __tests__
    │   ├── __snapshots__
    │   │   ├── bin.js.md
    │   │   └── bin.js.snap
    │   ├── bin.ts
    │   └── index.ts
    ├── index.ts
    └── types.graphql
├── tsconfig.json
└── yarn.lock


/.gitignore:
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1 | node_modules/
2 | 


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/bin.js:
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 1 | #!/usr/bin/env node
 2 | const argv = require('minimist')(process.argv.slice(2))
 3 | 
 4 | const colors = require('chalk')
 5 | const fs = require('fs')
 6 | const getStdin = require('get-stdin')
 7 | const GraphQL = require('graphql')
 8 | const { graphql } = GraphQL
 9 | const util = require('util')
10 | 
11 | const schema = require('./build')
12 | 
13 | const package = require('./package.json')
14 | const usage = `graphql-scraper v${package.version}
15 | 
16 | Usage: graphql-scraper [query-file] [--json] [--<variable-name>=value]
17 | 
18 | Reads a GraphQL query from query-file, and prints the result.
19 | 
20 | If query-file is not given, reads a query from stdin.
21 | 
22 | Options:
23 | \t--json\tSerialize the result as parseable JSON.
24 | 
25 | Example:
26 | > graphql-scraper query.graphql --json --url="https://news.ycombinator.com/" --page=2
27 | `
28 | 
29 | function die() {
30 |   console.log(usage)
31 |   process.exit(1)
32 | }
33 | 
34 | const formatters = {
35 |   json: function(result) {
36 |     console.log(JSON.stringify(result))
37 |   },
38 |   pretty: function(result) {
39 |     if (result.data) {
40 |       console.log(colors.green('Data:'))
41 |       printObject(result.data)
42 |     }
43 |     if (Array.isArray(result.errors)) {
44 |       console.log(colors.red('Errors:'))
45 |       result.errors.forEach(error => {
46 |         printObject(error)
47 |       })
48 |       console.log(colors.red('Your query has errors, see above.'))
49 |     }
50 |     function printObject(obj) {
51 |       console.log(util.inspect(obj, { depth: null, colors: true }))
52 |     }
53 |   },
54 | }
55 | 
56 | async function main() {
57 |   if (argv.help) {
58 |     console.log(usage)
59 |     return
60 |   }
61 | 
62 |   const formatter = argv.json ? 'json' : 'pretty'
63 |   delete argv.json
64 | 
65 |   let query
66 |   if (argv._.length === 0) {
67 |     query = await getStdin()
68 |     if (query === '') {
69 |       die()
70 |     }
71 |   } else if (argv._.length === 1) {
72 |     query = fs.readFileSync(argv._[0], { encoding: 'utf8' })
73 |   } else {
74 |     die()
75 |   }
76 |   delete argv._
77 | 
78 |   const result = await graphql(schema, query, {}, {}, argv)
79 |   formatters[formatter](result)
80 | }
81 | main()
82 | 


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/build/__tests__/bin.js:
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 1 | "use strict";
 2 | var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
 3 |     return new (P || (P = Promise))(function (resolve, reject) {
 4 |         function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
 5 |         function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
 6 |         function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
 7 |         step((generator = generator.apply(thisArg, _arguments || [])).next());
 8 |     });
 9 | };
10 | Object.defineProperty(exports, "__esModule", { value: true });
11 | const ava_1 = require("ava");
12 | const http_1 = require("http");
13 | const execa = require('execa');
14 | ava_1.default('it runs a query from stdin', (t) => __awaiter(this, void 0, void 0, function* () {
15 |     const server = http_1.createServer((req, res) => res.end(`
16 | <html>
17 | <head>
18 | <title>some test site</title>
19 | </head>
20 | <body>
21 | <main>looking good</main>
22 | </body>
23 | </html>
24 | `));
25 |     server.listen(13338);
26 |     const query = `
27 | {
28 |   page(url: "http://localhost:13338") {
29 |     title: text(selector: "title")
30 |     main: text(selector: "main")
31 |   }
32 | }
33 |   `;
34 |     const output = yield execa.stdout('./bin.js', ['--json'], { input: query });
35 |     t.snapshot(output);
36 |     server.close();
37 | }));
38 | ava_1.default('it runs a query from a file', (t) => __awaiter(this, void 0, void 0, function* () {
39 |     const output = yield execa.stdout('./bin.js', [
40 |         'examples/source.graphql',
41 |         '--json',
42 |     ]);
43 |     t.snapshot(output);
44 | }));
45 | ava_1.default('it formats output nicely', (t) => __awaiter(this, void 0, void 0, function* () {
46 |     const output = yield execa.stdout('./bin.js', ['examples/source.graphql']);
47 |     t.snapshot(output);
48 | }));
49 | ava_1.default('it formats errors nicely', (t) => __awaiter(this, void 0, void 0, function* () {
50 |     const output = yield execa.stdout('./bin.js', { input: 'garbage' });
51 |     t.snapshot(output);
52 | }));
53 | //# sourceMappingURL=bin.js.map


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/build/__tests__/bin.js.map:
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1 | {"version":3,"file":"bin.js","sourceRoot":"","sources":["../../src/__tests__/bin.ts"],"names":[],"mappings":";;;;;;;;;;AAAA,6BAAsB;AACtB,+BAAmC;AACnC,MAAM,KAAK,GAAG,OAAO,CAAC,OAAO,CAAC,CAAA;AAE9B,aAAI,CAAC,4BAA4B,EAAE,CAAM,CAAC,EAAC,EAAE;IAC3C,MAAM,MAAM,GAAG,mBAAY,CAAC,CAAC,GAAG,EAAE,GAAG,EAAE,EAAE,CACvC,GAAG,CAAC,GAAG,CAAC;;;;;;;;;CASX,CAAC,CACC,CAAA;IACD,MAAM,CAAC,MAAM,CAAC,KAAK,CAAC,CAAA;IAEpB,MAAM,KAAK,GAAG;;;;;;;GAOb,CAAA;IAED,MAAM,MAAM,GAAG,MAAM,KAAK,CAAC,MAAM,CAAC,UAAU,EAAE,CAAC,QAAQ,CAAC,EAAE,EAAE,KAAK,EAAE,KAAK,EAAE,CAAC,CAAA;IAC3E,CAAC,CAAC,QAAQ,CAAC,MAAM,CAAC,CAAA;IAElB,MAAM,CAAC,KAAK,EAAE,CAAA;AAChB,CAAC,CAAA,CAAC,CAAA;AAEF,aAAI,CAAC,6BAA6B,EAAE,CAAM,CAAC,EAAC,EAAE;IAC5C,MAAM,MAAM,GAAG,MAAM,KAAK,CAAC,MAAM,CAAC,UAAU,EAAE;QAC5C,yBAAyB;QACzB,QAAQ;KACT,CAAC,CAAA;IACF,CAAC,CAAC,QAAQ,CAAC,MAAM,CAAC,CAAA;AACpB,CAAC,CAAA,CAAC,CAAA;AAEF,aAAI,CAAC,0BAA0B,EAAE,CAAM,CAAC,EAAC,EAAE;IACzC,MAAM,MAAM,GAAG,MAAM,KAAK,CAAC,MAAM,CAAC,UAAU,EAAE,CAAC,yBAAyB,CAAC,CAAC,CAAA;IAC1E,CAAC,CAAC,QAAQ,CAAC,MAAM,CAAC,CAAA;AACpB,CAAC,CAAA,CAAC,CAAA;AAEF,aAAI,CAAC,0BAA0B,EAAE,CAAM,CAAC,EAAC,EAAE;IACzC,MAAM,MAAM,GAAG,MAAM,KAAK,CAAC,MAAM,CAAC,UAAU,EAAE,EAAE,KAAK,EAAE,SAAS,EAAE,CAAC,CAAA;IACnE,CAAC,CAAC,QAAQ,CAAC,MAAM,CAAC,CAAA;AACpB,CAAC,CAAA,CAAC,CAAA"}


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/build/__tests__/index.js:
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  1 | "use strict";
  2 | var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
  3 |     return new (P || (P = Promise))(function (resolve, reject) {
  4 |         function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
  5 |         function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
  6 |         function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
  7 |         step((generator = generator.apply(thisArg, _arguments || [])).next());
  8 |     });
  9 | };
 10 | Object.defineProperty(exports, "__esModule", { value: true });
 11 | const ava_1 = require("ava");
 12 | const GraphQL = require("graphql");
 13 | const { graphql } = GraphQL;
 14 | const http_1 = require("http");
 15 | const _1 = require("../");
 16 | const requiredSchema = require('../');
 17 | ava_1.default('es6 & commonjs imports work', t => {
 18 |     t.is(_1.default, requiredSchema);
 19 | });
 20 | ava_1.default('no args throws errors', (t) => __awaiter(this, void 0, void 0, function* () {
 21 |     const query = `{ page { title } }`;
 22 |     const response = yield graphql(_1.default, query);
 23 |     t.is(response && response.errors && response.errors[0].message, 'You need to provide either a URL or a HTML source string.');
 24 | }));
 25 | ava_1.default('title', (t) => __awaiter(this, void 0, void 0, function* () {
 26 |     const html = `<html><head><title>some title</title></head><body></body></html>`;
 27 |     const query = `{ page(source: "${html}") { title } }`;
 28 |     const response = yield graphql(_1.default, query);
 29 |     t.false('errors' in response);
 30 |     t.is(response.data && response.data.page.title, 'some title');
 31 | }));
 32 | ava_1.default('from url', (t) => __awaiter(this, void 0, void 0, function* () {
 33 |     const server = http_1.createServer((req, res) => {
 34 |         res.end(`<html><head><title>some title</title></head><body></body></html>`);
 35 |     });
 36 |     server.listen(13337);
 37 |     const query = `{ page(url: "http://localhost:13337/") { title } }`;
 38 |     const response = yield graphql(_1.default, query);
 39 |     t.false('errors' in response);
 40 |     t.is(response.data && response.data.page.title, 'some title');
 41 |     server.close();
 42 | }));
 43 | ava_1.default('content', (t) => __awaiter(this, void 0, void 0, function* () {
 44 |     const html = `<html><head><title>some title</title></head><body>some body</body></html>`;
 45 |     const query = `{ page(source: "${html}") { content } }`;
 46 |     const response = yield graphql(_1.default, query);
 47 |     t.false('errors' in response);
 48 |     t.is(response.data && response.data.page.content, '<head><title>some title</title></head><body>some body</body>');
 49 | }));
 50 | ava_1.default('content with selector', (t) => __awaiter(this, void 0, void 0, function* () {
 51 |     const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong></div></body></html>`;
 52 |     const query = `{
 53 |     page(source: "${html}") {
 54 |       content(selector: ".selectme")
 55 |     }
 56 |   }`;
 57 |     const response = yield graphql(_1.default, query);
 58 |     t.false('errors' in response);
 59 |     t.is(response.data && response.data.page.content, '<strong>bad</strong>');
 60 | }));
 61 | ava_1.default('not existing selector', (t) => __awaiter(this, void 0, void 0, function* () {
 62 |     const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong></div></body></html>`;
 63 |     const query = `{
 64 |     page(source: "${html}") {
 65 |       content(selector: ".selectmenot")
 66 |     }
 67 |   }`;
 68 |     const response = yield graphql(_1.default, query);
 69 |     t.false('errors' in response);
 70 |     t.is(response.data && response.data.page.content, null);
 71 | }));
 72 | ava_1.default('html', (t) => __awaiter(this, void 0, void 0, function* () {
 73 |     const html = `<html><head><title>some title</title></head><body>some body</body></html>`;
 74 |     const query = `{ page(source: "${html}") { html } }`;
 75 |     const response = yield graphql(_1.default, query);
 76 |     t.false('errors' in response);
 77 |     t.is(response.data && response.data.page.html, html);
 78 | }));
 79 | ava_1.default('html with selector', (t) => __awaiter(this, void 0, void 0, function* () {
 80 |     const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong></div></body></html>`;
 81 |     const query = `{
 82 |     page(source: "${html}") {
 83 |       html(selector: ".selectme")
 84 |     }
 85 |   }`;
 86 |     const response = yield graphql(_1.default, query);
 87 |     t.false('errors' in response);
 88 |     t.is(response.data && response.data.page.html, '<div class="selectme"><strong>bad</strong></div>');
 89 | }));
 90 | ava_1.default('text', (t) => __awaiter(this, void 0, void 0, function* () {
 91 |     const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong></div></body></html>`;
 92 |     const query = `{
 93 |     page(source: "${html}") {
 94 |       text
 95 |     }
 96 |   }`;
 97 |     const response = yield graphql(_1.default, query);
 98 |     t.false('errors' in response);
 99 |     t.is(response.data && response.data.page.text, 'some titlebad');
100 | }));
101 | ava_1.default('text with selector', (t) => __awaiter(this, void 0, void 0, function* () {
102 |     const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong></div></body></html>`;
103 |     const query = `{
104 |     page(source: "${html}") {
105 |       text(selector: ".selectme")
106 |     }
107 |   }`;
108 |     const response = yield graphql(_1.default, query);
109 |     t.false('errors' in response);
110 |     t.is(response.data && response.data.page.text, 'bad');
111 | }));
112 | ava_1.default('tag', (t) => __awaiter(this, void 0, void 0, function* () {
113 |     const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong></div></body></html>`;
114 |     const query = `{
115 |     page(source: "${html}") {
116 |       tag
117 |     }
118 |   }`;
119 |     const response = yield graphql(_1.default, query);
120 |     t.false('errors' in response);
121 |     t.is(response.data && response.data.page.tag, 'HTML');
122 | }));
123 | ava_1.default('tag with selector', (t) => __awaiter(this, void 0, void 0, function* () {
124 |     const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong></div></body></html>`;
125 |     const query = `{
126 |     page(source: "${html}") {
127 |       tag(selector: ".selectme")
128 |     }
129 |   }`;
130 |     const response = yield graphql(_1.default, query);
131 |     t.false('errors' in response);
132 |     t.is(response.data && response.data.page.tag, 'DIV');
133 | }));
134 | ava_1.default('attr', (t) => __awaiter(this, void 0, void 0, function* () {
135 |     const html = `<html style=\\"background: red;\\"><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong></div></body></html>`;
136 |     const query = `{
137 |     page(source: "${html}") {
138 |       attr(name: "style")
139 |     }
140 |   }`;
141 |     const response = yield graphql(_1.default, query);
142 |     t.false('errors' in response);
143 |     t.is(response.data && response.data.page.attr, 'background: red;');
144 | }));
145 | ava_1.default('wacky attr', (t) => __awaiter(this, void 0, void 0, function* () {
146 |     const html = `<html style=\\"background: red;\\"><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong></div></body></html>`;
147 |     const query = `{
148 |     page(source: "${html}") {
149 |       attr(name: "asdf")
150 |     }
151 |   }`;
152 |     const response = yield graphql(_1.default, query);
153 |     t.false('errors' in response);
154 |     t.is(response.data && response.data.page.attr, null);
155 | }));
156 | ava_1.default('attr with selector', (t) => __awaiter(this, void 0, void 0, function* () {
157 |     const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong></div></body></html>`;
158 |     const query = `{
159 |     page(source: "${html}") {
160 |       attr(selector: ".selectme", name: "class")
161 |     }
162 |   }`;
163 |     const response = yield graphql(_1.default, query);
164 |     t.false('errors' in response);
165 |     t.is(response.data && response.data.page.attr, 'selectme');
166 | }));
167 | ava_1.default('has', (t) => __awaiter(this, void 0, void 0, function* () {
168 |     const html = `<html><head><title>some title</title></head><body><div class=\\"one\\"><strong>one</strong></div><div class=\\"two\\"><strong>two</strong></div></body></html>`;
169 |     const query = `{
170 |     page(source: "${html}") {
171 |       firstDiv: query(selector: "div") {
172 |         isStrong: has(selector: "strong")
173 |       }
174 |     }
175 |   }`;
176 |     const response = yield graphql(_1.default, query);
177 |     t.false('errors' in response);
178 |     t.true(response.data && response.data.page.firstDiv.isStrong);
179 | }));
180 | ava_1.default('has not', (t) => __awaiter(this, void 0, void 0, function* () {
181 |     const html = `<html><head><title>some title</title></head><body><div class=\\"one\\"><strong>one</strong></div><div class=\\"two\\"><strong>two</strong></div></body></html>`;
182 |     const query = `{
183 |     page(source: "${html}") {
184 |       firstDiv: query(selector: "div") {
185 |         isWeak: has(selector: "weak")
186 |       }
187 |     }
188 |   }`;
189 |     const response = yield graphql(_1.default, query);
190 |     t.false('errors' in response);
191 |     t.true(response.data && !response.data.page.firstDiv.isWeak);
192 | }));
193 | ava_1.default('query', (t) => __awaiter(this, void 0, void 0, function* () {
194 |     const html = `<html><head><title>some title</title></head><body><div class=\\"one\\"><strong>one</strong></div><div class=\\"two\\"><strong>two</strong></div></body></html>`;
195 |     const query = `{
196 |     page(source: "${html}") {
197 |       firstDiv: query(selector: "div") {
198 |         text
199 |       }
200 |     }
201 |   }`;
202 |     const response = yield graphql(_1.default, query);
203 |     t.false('errors' in response);
204 |     t.deepEqual(response.data && response.data.page.firstDiv, { text: 'one' });
205 | }));
206 | ava_1.default('queryAll', (t) => __awaiter(this, void 0, void 0, function* () {
207 |     const html = `<html><head><title>some title</title></head><body><div class=\\"one\\"><strong>one</strong></div><div class=\\"two\\"><strong>two</strong></div></body></html>`;
208 |     const query = `{
209 |     page(source: "${html}") {
210 |       divs: queryAll(selector: "div") {
211 |         text
212 |       }
213 |     }
214 |   }`;
215 |     const response = yield graphql(_1.default, query);
216 |     t.false('errors' in response);
217 |     t.deepEqual(response.data && response.data.page.divs, [
218 |         { text: 'one' },
219 |         { text: 'two' },
220 |     ]);
221 | }));
222 | ava_1.default('children', (t) => __awaiter(this, void 0, void 0, function* () {
223 |     const html = `<html><head><title>some title</title></head><body><div class=\\"one\\"><strong>one</strong><strong>two</strong></div><div class=\\"two\\"><strong>two</strong><strong>three</strong></div></body></html>`;
224 |     const query = `{
225 |     page(source: "${html}") {
226 |       kids: queryAll(selector: "div") {
227 |         children {
228 |           text
229 |         }
230 |       }
231 |     }
232 |   }`;
233 |     const response = yield graphql(_1.default, query);
234 |     t.false('errors' in response);
235 |     t.deepEqual(response.data && response.data.page.kids, [
236 |         {
237 |             children: [{ text: 'one' }, { text: 'two' }],
238 |         },
239 |         {
240 |             children: [{ text: 'two' }, { text: 'three' }],
241 |         },
242 |     ]);
243 | }));
244 | ava_1.default('childNodes', (t) => __awaiter(this, void 0, void 0, function* () {
245 |     const html = `<html><head><title>some title</title></head><body><div class=\\"one\\">one<strong>two</strong></div><div class=\\"two\\"><strong>two</strong>amazing<strong>three</strong></div></body></html>`;
246 |     const query = `{
247 |     page(source: "${html}") {
248 |       kids: queryAll(selector: "div") {
249 |         childNodes {
250 |           text
251 |         }
252 |       }
253 |     }
254 |   }`;
255 |     const response = yield graphql(_1.default, query);
256 |     t.false('errors' in response);
257 |     t.deepEqual(response.data && response.data.page.kids, [
258 |         {
259 |             childNodes: [{ text: 'one' }, { text: 'two' }],
260 |         },
261 |         {
262 |             childNodes: [{ text: 'two' }, { text: 'amazing' }, { text: 'three' }],
263 |         },
264 |     ]);
265 | }));
266 | ava_1.default('parent', (t) => __awaiter(this, void 0, void 0, function* () {
267 |     const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong></div></body></html>`;
268 |     const query = `{
269 |     page(source: "${html}") {
270 |       query(selector: "strong") {
271 |         parent {
272 |           attr(name: "class")
273 |         }
274 |       }
275 |     }
276 |   }`;
277 |     const response = yield graphql(_1.default, query);
278 |     t.false('errors' in response);
279 |     t.is(response.data && response.data.page.query.parent.attr, 'selectme');
280 | }));
281 | ava_1.default('siblings', (t) => __awaiter(this, void 0, void 0, function* () {
282 |     const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong><p>boom</p><span>bap</span></div></body></html>`;
283 |     const query = `{
284 |     page(source: "${html}") {
285 |       query(selector: "strong") {
286 |         siblings {
287 |           text
288 |         }
289 |       }
290 |     }
291 |   }`;
292 |     const response = yield graphql(_1.default, query);
293 |     t.false('errors' in response);
294 |     t.deepEqual(response.data && response.data.page.query.siblings, [
295 |         { text: 'bad' },
296 |         { text: 'boom' },
297 |         { text: 'bap' },
298 |     ]);
299 | }));
300 | ava_1.default('siblings of root is only html', (t) => __awaiter(this, void 0, void 0, function* () {
301 |     const html = `<!doctype html><html><head></head><body>nothing to see here</body></html>`;
302 |     const query = `{
303 |     page(source: "${html}") {
304 |       siblings {
305 |         tag
306 |       }
307 |     }
308 |   }`;
309 |     const response = yield graphql(_1.default, query);
310 |     t.false('errors' in response);
311 |     t.deepEqual(response.data && response.data.page.siblings, [{ tag: 'HTML' }]);
312 | }));
313 | ava_1.default('next', (t) => __awaiter(this, void 0, void 0, function* () {
314 |     const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong><p>boom</p><span>bap</span></div></body></html>`;
315 |     const query = `{
316 |     page(source: "${html}") {
317 |       query(selector: "strong") {
318 |         next {
319 |           text
320 |         }
321 |       }
322 |     }
323 |   }`;
324 |     const response = yield graphql(_1.default, query);
325 |     t.false('errors' in response);
326 |     t.is(response.data && response.data.page.query.next.text, 'boom');
327 | }));
328 | ava_1.default('next - bare text', (t) => __awaiter(this, void 0, void 0, function* () {
329 |     const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong>bare text<span>bap</span></div></body></html>`;
330 |     const query = `{
331 |     page(source: "${html}") {
332 |       query(selector: "strong") {
333 |         next {
334 |           tag
335 |           text
336 |         }
337 |       }
338 |     }
339 |   }`;
340 |     const response = yield graphql(_1.default, query);
341 |     t.false('errors' in response);
342 |     t.is(response.data && response.data.page.query.next.tag, null);
343 |     t.is(response.data && response.data.page.query.next.text, 'bare text');
344 | }));
345 | ava_1.default('nextAll', (t) => __awaiter(this, void 0, void 0, function* () {
346 |     const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong>bare text<span>bap</span></div></body></html>`;
347 |     const query = `{
348 |     page(source: "${html}") {
349 |       query(selector: "strong") {
350 |         nextAll {
351 |           tag
352 |           text
353 |         }
354 |       }
355 |     }
356 |   }`;
357 |     const response = yield graphql(_1.default, query);
358 |     t.false('errors' in response);
359 |     t.deepEqual(response.data && response.data.page.query.nextAll, [
360 |         { tag: null, text: 'bare text' },
361 |         { tag: 'SPAN', text: 'bap' },
362 |     ]);
363 | }));
364 | ava_1.default('previous', (t) => __awaiter(this, void 0, void 0, function* () {
365 |     const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong><p>boom</p><span>bap</span></div></body></html>`;
366 |     const query = `{
367 |     page(source: "${html}") {
368 |       query(selector: "span") {
369 |         previous {
370 |           text
371 |         }
372 |       }
373 |     }
374 |   }`;
375 |     const response = yield graphql(_1.default, query);
376 |     t.false('errors' in response);
377 |     t.is(response.data && response.data.page.query.previous.text, 'boom');
378 | }));
379 | ava_1.default('previousAll', (t) => __awaiter(this, void 0, void 0, function* () {
380 |     const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong>bare text<span>bap</span></div></body></html>`;
381 |     const query = `{
382 |     page(source: "${html}") {
383 |       query(selector: "span") {
384 |         previousAll {
385 |           tag
386 |           text
387 |         }
388 |       }
389 |     }
390 |   }`;
391 |     const response = yield graphql(_1.default, query);
392 |     t.false('errors' in response);
393 |     t.deepEqual(response.data && response.data.page.query.previousAll, [
394 |         { tag: 'STRONG', text: 'bad' },
395 |         { tag: null, text: 'bare text' },
396 |     ]);
397 | }));
398 | ava_1.default('visit', (t) => __awaiter(this, void 0, void 0, function* () {
399 |     const server = http_1.createServer((req, res) => {
400 |         if (req.url === '/link') {
401 |             res.end(`<html><body><strong>we managed to visit the link!</strong></body></html>`);
402 |         }
403 |         else {
404 |             res.end(`<html><body><a href="/link">come on in</a></body></html>`);
405 |         }
406 |     });
407 |     server.listen(13339);
408 |     const query = `{
409 |       page(url: "http://localhost:13339/") {
410 |         link: query(selector: "a") {
411 |           visit {
412 |             text(selector: "strong")
413 |           }
414 |         }
415 |       }
416 |     }`;
417 |     const response = yield graphql(_1.default, query);
418 |     t.false('errors' in response);
419 |     t.is(response.data && response.data.page.link.visit.text, 'we managed to visit the link!');
420 |     server.close();
421 | }));
422 | //# sourceMappingURL=index.js.map


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/build/__tests__/index.js.map:
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/build/index.d.ts:
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1 | import { GraphQLSchema } from 'graphql';
2 | declare const schema: GraphQLSchema;
3 | export = schema;
4 | 


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/build/index.js:
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  1 | "use strict";
  2 | var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
  3 |     return new (P || (P = Promise))(function (resolve, reject) {
  4 |         function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
  5 |         function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
  6 |         function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
  7 |         step((generator = generator.apply(thisArg, _arguments || [])).next());
  8 |     });
  9 | };
 10 | const graphql_1 = require("graphql");
 11 | const jsdom_1 = require("jsdom");
 12 | const url_1 = require("url");
 13 | function sharedFields() {
 14 |     const selector = {
 15 |         type: graphql_1.GraphQLString,
 16 |         description: 'A [CSS selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Introduction_to_CSS/Selectors).',
 17 |     };
 18 |     return {
 19 |         content: {
 20 |             type: graphql_1.GraphQLString,
 21 |             description: 'The HTML content of the subnodes',
 22 |             args: { selector },
 23 |             resolve(element, { selector }) {
 24 |                 element = selector ? element.querySelector(selector) : element;
 25 |                 return element && element.innerHTML;
 26 |             },
 27 |         },
 28 |         html: {
 29 |             type: graphql_1.GraphQLString,
 30 |             description: 'The HTML content of the selected DOM node',
 31 |             args: { selector },
 32 |             resolve(element, { selector }) {
 33 |                 element = selector ? element.querySelector(selector) : element;
 34 |                 return element && element.outerHTML;
 35 |             },
 36 |         },
 37 |         text: {
 38 |             type: graphql_1.GraphQLString,
 39 |             description: 'The text content of the selected DOM node',
 40 |             args: { selector },
 41 |             resolve(element, { selector }) {
 42 |                 element = selector ? element.querySelector(selector) : element;
 43 |                 return element && element.textContent;
 44 |             },
 45 |         },
 46 |         tag: {
 47 |             type: graphql_1.GraphQLString,
 48 |             description: 'The tag name of the selected DOM node',
 49 |             args: { selector },
 50 |             resolve(element, { selector }) {
 51 |                 element = selector ? element.querySelector(selector) : element;
 52 |                 return element && element.tagName;
 53 |             },
 54 |         },
 55 |         attr: {
 56 |             type: graphql_1.GraphQLString,
 57 |             description: 'An attribute of the selected node (eg. `href`, `src`, etc.).',
 58 |             args: {
 59 |                 selector,
 60 |                 name: {
 61 |                     type: new graphql_1.GraphQLNonNull(graphql_1.GraphQLString),
 62 |                     description: 'The name of the attribute',
 63 |                 },
 64 |             },
 65 |             resolve(element, { selector, name }) {
 66 |                 element = selector ? element.querySelector(selector) : element;
 67 |                 if (element == null)
 68 |                     return null;
 69 |                 const attribute = element.attributes[name];
 70 |                 if (attribute == null)
 71 |                     return null;
 72 |                 return attribute.value;
 73 |             },
 74 |         },
 75 |         has: {
 76 |             type: graphql_1.GraphQLBoolean,
 77 |             description: 'Returns true if an element with the given selector exists.',
 78 |             args: { selector },
 79 |             resolve(element, { selector }) {
 80 |                 return !!element.querySelector(selector);
 81 |             },
 82 |         },
 83 |         query: {
 84 |             type: ElementType,
 85 |             description: 'Equivalent to [Element.querySelector](https://developer.mozilla.org/en-US/docs/Web/API/Element/querySelector). The selectors of any nested queries will be scoped to the resulting element.',
 86 |             args: { selector },
 87 |             resolve(element, { selector }) {
 88 |                 return element.querySelector(selector);
 89 |             },
 90 |         },
 91 |         queryAll: {
 92 |             type: new graphql_1.GraphQLList(ElementType),
 93 |             description: 'Equivalent to [Element.querySelectorAll](https://developer.mozilla.org/en-US/docs/Web/API/Element/querySelectorAll). The selectors of any nested queries will be scoped to the resulting elements.',
 94 |             args: { selector },
 95 |             resolve(element, { selector }) {
 96 |                 return Array.from(element.querySelectorAll(selector));
 97 |             },
 98 |         },
 99 |         children: {
100 |             type: new graphql_1.GraphQLList(ElementType),
101 |             description: "An element's child elements.",
102 |             resolve(element) {
103 |                 return Array.from(element.children);
104 |             },
105 |         },
106 |         childNodes: {
107 |             type: new graphql_1.GraphQLList(ElementType),
108 |             description: "An element's child nodes. Includes text nodes.",
109 |             resolve(element) {
110 |                 return Array.from(element.childNodes);
111 |             }
112 |         },
113 |         parent: {
114 |             type: ElementType,
115 |             description: "An element's parent element.",
116 |             resolve(element) {
117 |                 return element.parentElement;
118 |             },
119 |         },
120 |         siblings: {
121 |             type: new graphql_1.GraphQLList(ElementType),
122 |             description: "All elements which are at the same level in the tree as the current element, ie. the children of the current element's parent. Includes the current element.",
123 |             resolve(element) {
124 |                 const parent = element.parentElement;
125 |                 if (parent == null)
126 |                     return [element];
127 |                 return Array.from(parent.children);
128 |             },
129 |         },
130 |         next: {
131 |             type: ElementType,
132 |             description: "The current element's next sibling. Includes text nodes. Equivalent to [Node.nextSibling](https://developer.mozilla.org/en-US/docs/Web/API/Node/nextSibling).",
133 |             resolve(element) {
134 |                 return element.nextSibling;
135 |             },
136 |         },
137 |         nextAll: {
138 |             type: new graphql_1.GraphQLList(ElementType),
139 |             description: "All of the current element's next siblings",
140 |             resolve(element, { selector }) {
141 |                 const siblings = [];
142 |                 for (let next = element.nextSibling; next != null; next = next.nextSibling) {
143 |                     siblings.push(next);
144 |                 }
145 |                 return siblings;
146 |             },
147 |         },
148 |         previous: {
149 |             type: ElementType,
150 |             description: "The current element's previous sibling. Includes text nodes. Equivalent to [Node.previousSibling](https://developer.mozilla.org/en-US/docs/Web/API/Node/nextSibling).",
151 |             resolve(element) {
152 |                 return element.previousSibling;
153 |             },
154 |         },
155 |         previousAll: {
156 |             type: new graphql_1.GraphQLList(ElementType),
157 |             description: "All of the current element's previous siblings",
158 |             resolve(element, { selector }) {
159 |                 const siblings = [];
160 |                 for (let previous = element.previousSibling; previous != null; previous = previous.previousSibling) {
161 |                     siblings.push(previous);
162 |                 }
163 |                 siblings.reverse();
164 |                 return siblings;
165 |             },
166 |         },
167 |     };
168 | }
169 | const NodeType = new graphql_1.GraphQLInterfaceType({
170 |     name: 'Node',
171 |     description: 'A DOM node (either an Element or a Document).',
172 |     fields: sharedFields,
173 | });
174 | const DocumentType = new graphql_1.GraphQLObjectType({
175 |     name: 'Document',
176 |     description: 'A DOM document.',
177 |     interfaces: [NodeType],
178 |     fields: () => (Object.assign({}, sharedFields(), { title: {
179 |             type: graphql_1.GraphQLString,
180 |             description: 'The page title',
181 |             resolve(element) {
182 |                 return element.ownerDocument.title;
183 |             },
184 |         } })),
185 | });
186 | const ElementType = new graphql_1.GraphQLObjectType({
187 |     name: 'Element',
188 |     description: 'A DOM element.',
189 |     interfaces: [NodeType],
190 |     fields: () => (Object.assign({}, sharedFields(), { visit: {
191 |             type: DocumentType,
192 |             description: 'If the element is a link, visit the page linked to in the href attribute.',
193 |             resolve(element) {
194 |                 return __awaiter(this, void 0, void 0, function* () {
195 |                     const href = element.attributes['href'];
196 |                     if (href == null) {
197 |                         return null;
198 |                     }
199 |                     const url = url_1.resolve(element.ownerDocument.location.href, href.value); // handle relative links.
200 |                     const dom = yield jsdom_1.JSDOM.fromURL(url);
201 |                     return dom.window.document.documentElement;
202 |                 });
203 |             },
204 |         } })),
205 | });
206 | const schema = new graphql_1.GraphQLSchema({
207 |     query: new graphql_1.GraphQLObjectType({
208 |         name: 'Query',
209 |         fields: () => ({
210 |             page: {
211 |                 type: DocumentType,
212 |                 args: {
213 |                     url: {
214 |                         type: graphql_1.GraphQLString,
215 |                         description: 'A URL to fetch the HTML source from.',
216 |                     },
217 |                     source: {
218 |                         type: graphql_1.GraphQLString,
219 |                         description: 'A string containing HTML to be used as the source document.',
220 |                     },
221 |                 },
222 |                 resolve(_, { url, source }) {
223 |                     return __awaiter(this, void 0, void 0, function* () {
224 |                         if (url == null && source == null) {
225 |                             throw new Error('You need to provide either a URL or a HTML source string.');
226 |                         }
227 |                         const dom = url != null ? yield jsdom_1.JSDOM.fromURL(url) : new jsdom_1.JSDOM(source);
228 |                         return dom.window.document.documentElement;
229 |                     });
230 |                 },
231 |             },
232 |         }),
233 |     }),
234 | });
235 | // Make this importable with ES6
236 | schema['default'] = schema;
237 | module.exports = schema;
238 | //# sourceMappingURL=index.js.map


--------------------------------------------------------------------------------
/build/index.js.map:
--------------------------------------------------------------------------------
1 | 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/changelog.md:
--------------------------------------------------------------------------------
 1 | # Changelog
 2 | 
 3 | ## 1.2.1
 4 | 
 5 | - `graphql` was incorrectly listed as a dev dependency.
 6 | 
 7 | ## 1.2.0
 8 | 
 9 | - Fixed CLI.
10 | 
11 | ## 1.1.0
12 | 
13 | - Added `childNodes` field
14 | - Added TypeScript declaration file
15 | 
16 | ## 1.0.0
17 | 
18 | Initial release


--------------------------------------------------------------------------------
/doc/schema.md:
--------------------------------------------------------------------------------
  1 | # Schema Types
  2 | 
  3 | <details>
  4 |   <summary><strong>Table of Contents</strong></summary>
  5 | 
  6 |   * [Query](#query)
  7 |   * [Objects](#objects)
  8 |     * [Document](#document)
  9 |     * [Element](#element)
 10 |   * [Scalars](#scalars)
 11 |     * [Boolean](#boolean)
 12 |     * [String](#string)
 13 |   * [Interfaces](#interfaces)
 14 |     * [Node](#node)
 15 | 
 16 | </details>
 17 | 
 18 | ## Query 
 19 | <table>
 20 | <thead>
 21 | <tr>
 22 | <th align="left">Field</th>
 23 | <th align="right">Argument</th>
 24 | <th align="left">Type</th>
 25 | <th align="left">Description</th>
 26 | </tr>
 27 | </thead>
 28 | <tbody>
 29 | <tr>
 30 | <td colspan="2" valign="top"><strong>page</strong></td>
 31 | <td valign="top"><a href="#document">Document</a></td>
 32 | <td></td>
 33 | </tr>
 34 | <tr>
 35 | <td colspan="2" align="right" valign="top">url</td>
 36 | <td valign="top"><a href="#string">String</a></td>
 37 | <td>
 38 | 
 39 | A URL to fetch the HTML source from.
 40 | 
 41 | </td>
 42 | </tr>
 43 | <tr>
 44 | <td colspan="2" align="right" valign="top">source</td>
 45 | <td valign="top"><a href="#string">String</a></td>
 46 | <td>
 47 | 
 48 | A string containing HTML to be used as the source document.
 49 | 
 50 | </td>
 51 | </tr>
 52 | </tbody>
 53 | </table>
 54 | 
 55 | ## Objects
 56 | 
 57 | ### Document
 58 | 
 59 | A DOM document.
 60 | 
 61 | <table>
 62 | <thead>
 63 | <tr>
 64 | <th align="left">Field</th>
 65 | <th align="right">Argument</th>
 66 | <th align="left">Type</th>
 67 | <th align="left">Description</th>
 68 | </tr>
 69 | </thead>
 70 | <tbody>
 71 | <tr>
 72 | <td colspan="2" valign="top"><strong>content</strong></td>
 73 | <td valign="top"><a href="#string">String</a></td>
 74 | <td>
 75 | 
 76 | The HTML content of the subnodes
 77 | 
 78 | </td>
 79 | </tr>
 80 | <tr>
 81 | <td colspan="2" align="right" valign="top">selector</td>
 82 | <td valign="top"><a href="#string">String</a></td>
 83 | <td>
 84 | 
 85 | A [CSS selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Introduction_to_CSS/Selectors).
 86 | 
 87 | </td>
 88 | </tr>
 89 | <tr>
 90 | <td colspan="2" valign="top"><strong>html</strong></td>
 91 | <td valign="top"><a href="#string">String</a></td>
 92 | <td>
 93 | 
 94 | The HTML content of the selected DOM node
 95 | 
 96 | </td>
 97 | </tr>
 98 | <tr>
 99 | <td colspan="2" align="right" valign="top">selector</td>
100 | <td valign="top"><a href="#string">String</a></td>
101 | <td>
102 | 
103 | A [CSS selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Introduction_to_CSS/Selectors).
104 | 
105 | </td>
106 | </tr>
107 | <tr>
108 | <td colspan="2" valign="top"><strong>text</strong></td>
109 | <td valign="top"><a href="#string">String</a></td>
110 | <td>
111 | 
112 | The text content of the selected DOM node
113 | 
114 | </td>
115 | </tr>
116 | <tr>
117 | <td colspan="2" align="right" valign="top">selector</td>
118 | <td valign="top"><a href="#string">String</a></td>
119 | <td>
120 | 
121 | A [CSS selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Introduction_to_CSS/Selectors).
122 | 
123 | </td>
124 | </tr>
125 | <tr>
126 | <td colspan="2" valign="top"><strong>tag</strong></td>
127 | <td valign="top"><a href="#string">String</a></td>
128 | <td>
129 | 
130 | The tag name of the selected DOM node
131 | 
132 | </td>
133 | </tr>
134 | <tr>
135 | <td colspan="2" align="right" valign="top">selector</td>
136 | <td valign="top"><a href="#string">String</a></td>
137 | <td>
138 | 
139 | A [CSS selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Introduction_to_CSS/Selectors).
140 | 
141 | </td>
142 | </tr>
143 | <tr>
144 | <td colspan="2" valign="top"><strong>attr</strong></td>
145 | <td valign="top"><a href="#string">String</a></td>
146 | <td>
147 | 
148 | An attribute of the selected node (eg. `href`, `src`, etc.).
149 | 
150 | </td>
151 | </tr>
152 | <tr>
153 | <td colspan="2" align="right" valign="top">selector</td>
154 | <td valign="top"><a href="#string">String</a></td>
155 | <td>
156 | 
157 | A [CSS selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Introduction_to_CSS/Selectors).
158 | 
159 | </td>
160 | </tr>
161 | <tr>
162 | <td colspan="2" align="right" valign="top">name</td>
163 | <td valign="top"><a href="#string">String</a>!</td>
164 | <td>
165 | 
166 | The name of the attribute
167 | 
168 | </td>
169 | </tr>
170 | <tr>
171 | <td colspan="2" valign="top"><strong>has</strong></td>
172 | <td valign="top"><a href="#boolean">Boolean</a></td>
173 | <td>
174 | 
175 | Returns true if an element with the given selector exists.
176 | 
177 | </td>
178 | </tr>
179 | <tr>
180 | <td colspan="2" align="right" valign="top">selector</td>
181 | <td valign="top"><a href="#string">String</a></td>
182 | <td>
183 | 
184 | A [CSS selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Introduction_to_CSS/Selectors).
185 | 
186 | </td>
187 | </tr>
188 | <tr>
189 | <td colspan="2" valign="top"><strong>query</strong></td>
190 | <td valign="top"><a href="#element">Element</a></td>
191 | <td>
192 | 
193 | Equivalent to [Element.querySelector](https://developer.mozilla.org/en-US/docs/Web/API/Element/querySelector). The selectors of any nested queries will be scoped to the resulting element.
194 | 
195 | </td>
196 | </tr>
197 | <tr>
198 | <td colspan="2" align="right" valign="top">selector</td>
199 | <td valign="top"><a href="#string">String</a></td>
200 | <td>
201 | 
202 | A [CSS selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Introduction_to_CSS/Selectors).
203 | 
204 | </td>
205 | </tr>
206 | <tr>
207 | <td colspan="2" valign="top"><strong>queryAll</strong></td>
208 | <td valign="top">[<a href="#element">Element</a>]</td>
209 | <td>
210 | 
211 | Equivalent to [Element.querySelectorAll](https://developer.mozilla.org/en-US/docs/Web/API/Element/querySelectorAll). The selectors of any nested queries will be scoped to the resulting elements.
212 | 
213 | </td>
214 | </tr>
215 | <tr>
216 | <td colspan="2" align="right" valign="top">selector</td>
217 | <td valign="top"><a href="#string">String</a></td>
218 | <td>
219 | 
220 | A [CSS selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Introduction_to_CSS/Selectors).
221 | 
222 | </td>
223 | </tr>
224 | <tr>
225 | <td colspan="2" valign="top"><strong>children</strong></td>
226 | <td valign="top">[<a href="#element">Element</a>]</td>
227 | <td>
228 | 
229 | An element's child elements.
230 | 
231 | </td>
232 | </tr>
233 | <tr>
234 | <td colspan="2" valign="top"><strong>parent</strong></td>
235 | <td valign="top"><a href="#element">Element</a></td>
236 | <td>
237 | 
238 | An element's parent element.
239 | 
240 | </td>
241 | </tr>
242 | <tr>
243 | <td colspan="2" valign="top"><strong>siblings</strong></td>
244 | <td valign="top">[<a href="#element">Element</a>]</td>
245 | <td>
246 | 
247 | All elements which are at the same level in the tree as the current element, ie. the children of the current element's parent. Includes the current element.
248 | 
249 | </td>
250 | </tr>
251 | <tr>
252 | <td colspan="2" valign="top"><strong>next</strong></td>
253 | <td valign="top"><a href="#element">Element</a></td>
254 | <td>
255 | 
256 | The current element's next sibling. Includes text nodes. Equivalent to [Node.nextSibling](https://developer.mozilla.org/en-US/docs/Web/API/Node/nextSibling).
257 | 
258 | </td>
259 | </tr>
260 | <tr>
261 | <td colspan="2" valign="top"><strong>nextAll</strong></td>
262 | <td valign="top">[<a href="#element">Element</a>]</td>
263 | <td>
264 | 
265 | All of the current element's next siblings
266 | 
267 | </td>
268 | </tr>
269 | <tr>
270 | <td colspan="2" valign="top"><strong>previous</strong></td>
271 | <td valign="top"><a href="#element">Element</a></td>
272 | <td>
273 | 
274 | The current element's previous sibling. Includes text nodes. Equivalent to [Node.previousSibling](https://developer.mozilla.org/en-US/docs/Web/API/Node/nextSibling).
275 | 
276 | </td>
277 | </tr>
278 | <tr>
279 | <td colspan="2" valign="top"><strong>previousAll</strong></td>
280 | <td valign="top">[<a href="#element">Element</a>]</td>
281 | <td>
282 | 
283 | All of the current element's previous siblings
284 | 
285 | </td>
286 | </tr>
287 | <tr>
288 | <td colspan="2" valign="top"><strong>title</strong></td>
289 | <td valign="top"><a href="#string">String</a></td>
290 | <td>
291 | 
292 | The page title
293 | 
294 | </td>
295 | </tr>
296 | </tbody>
297 | </table>
298 | 
299 | ### Element
300 | 
301 | A DOM element.
302 | 
303 | <table>
304 | <thead>
305 | <tr>
306 | <th align="left">Field</th>
307 | <th align="right">Argument</th>
308 | <th align="left">Type</th>
309 | <th align="left">Description</th>
310 | </tr>
311 | </thead>
312 | <tbody>
313 | <tr>
314 | <td colspan="2" valign="top"><strong>content</strong></td>
315 | <td valign="top"><a href="#string">String</a></td>
316 | <td>
317 | 
318 | The HTML content of the subnodes
319 | 
320 | </td>
321 | </tr>
322 | <tr>
323 | <td colspan="2" align="right" valign="top">selector</td>
324 | <td valign="top"><a href="#string">String</a></td>
325 | <td>
326 | 
327 | A [CSS selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Introduction_to_CSS/Selectors).
328 | 
329 | </td>
330 | </tr>
331 | <tr>
332 | <td colspan="2" valign="top"><strong>html</strong></td>
333 | <td valign="top"><a href="#string">String</a></td>
334 | <td>
335 | 
336 | The HTML content of the selected DOM node
337 | 
338 | </td>
339 | </tr>
340 | <tr>
341 | <td colspan="2" align="right" valign="top">selector</td>
342 | <td valign="top"><a href="#string">String</a></td>
343 | <td>
344 | 
345 | A [CSS selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Introduction_to_CSS/Selectors).
346 | 
347 | </td>
348 | </tr>
349 | <tr>
350 | <td colspan="2" valign="top"><strong>text</strong></td>
351 | <td valign="top"><a href="#string">String</a></td>
352 | <td>
353 | 
354 | The text content of the selected DOM node
355 | 
356 | </td>
357 | </tr>
358 | <tr>
359 | <td colspan="2" align="right" valign="top">selector</td>
360 | <td valign="top"><a href="#string">String</a></td>
361 | <td>
362 | 
363 | A [CSS selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Introduction_to_CSS/Selectors).
364 | 
365 | </td>
366 | </tr>
367 | <tr>
368 | <td colspan="2" valign="top"><strong>tag</strong></td>
369 | <td valign="top"><a href="#string">String</a></td>
370 | <td>
371 | 
372 | The tag name of the selected DOM node
373 | 
374 | </td>
375 | </tr>
376 | <tr>
377 | <td colspan="2" align="right" valign="top">selector</td>
378 | <td valign="top"><a href="#string">String</a></td>
379 | <td>
380 | 
381 | A [CSS selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Introduction_to_CSS/Selectors).
382 | 
383 | </td>
384 | </tr>
385 | <tr>
386 | <td colspan="2" valign="top"><strong>attr</strong></td>
387 | <td valign="top"><a href="#string">String</a></td>
388 | <td>
389 | 
390 | An attribute of the selected node (eg. `href`, `src`, etc.).
391 | 
392 | </td>
393 | </tr>
394 | <tr>
395 | <td colspan="2" align="right" valign="top">selector</td>
396 | <td valign="top"><a href="#string">String</a></td>
397 | <td>
398 | 
399 | A [CSS selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Introduction_to_CSS/Selectors).
400 | 
401 | </td>
402 | </tr>
403 | <tr>
404 | <td colspan="2" align="right" valign="top">name</td>
405 | <td valign="top"><a href="#string">String</a>!</td>
406 | <td>
407 | 
408 | The name of the attribute
409 | 
410 | </td>
411 | </tr>
412 | <tr>
413 | <td colspan="2" valign="top"><strong>has</strong></td>
414 | <td valign="top"><a href="#boolean">Boolean</a></td>
415 | <td>
416 | 
417 | Returns true if an element with the given selector exists.
418 | 
419 | </td>
420 | </tr>
421 | <tr>
422 | <td colspan="2" align="right" valign="top">selector</td>
423 | <td valign="top"><a href="#string">String</a></td>
424 | <td>
425 | 
426 | A [CSS selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Introduction_to_CSS/Selectors).
427 | 
428 | </td>
429 | </tr>
430 | <tr>
431 | <td colspan="2" valign="top"><strong>query</strong></td>
432 | <td valign="top"><a href="#element">Element</a></td>
433 | <td>
434 | 
435 | Equivalent to [Element.querySelector](https://developer.mozilla.org/en-US/docs/Web/API/Element/querySelector). The selectors of any nested queries will be scoped to the resulting element.
436 | 
437 | </td>
438 | </tr>
439 | <tr>
440 | <td colspan="2" align="right" valign="top">selector</td>
441 | <td valign="top"><a href="#string">String</a></td>
442 | <td>
443 | 
444 | A [CSS selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Introduction_to_CSS/Selectors).
445 | 
446 | </td>
447 | </tr>
448 | <tr>
449 | <td colspan="2" valign="top"><strong>queryAll</strong></td>
450 | <td valign="top">[<a href="#element">Element</a>]</td>
451 | <td>
452 | 
453 | Equivalent to [Element.querySelectorAll](https://developer.mozilla.org/en-US/docs/Web/API/Element/querySelectorAll). The selectors of any nested queries will be scoped to the resulting elements.
454 | 
455 | </td>
456 | </tr>
457 | <tr>
458 | <td colspan="2" align="right" valign="top">selector</td>
459 | <td valign="top"><a href="#string">String</a></td>
460 | <td>
461 | 
462 | A [CSS selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Introduction_to_CSS/Selectors).
463 | 
464 | </td>
465 | </tr>
466 | <tr>
467 | <td colspan="2" valign="top"><strong>children</strong></td>
468 | <td valign="top">[<a href="#element">Element</a>]</td>
469 | <td>
470 | 
471 | An element's child elements.
472 | 
473 | </td>
474 | </tr>
475 | <tr>
476 | <td colspan="2" valign="top"><strong>parent</strong></td>
477 | <td valign="top"><a href="#element">Element</a></td>
478 | <td>
479 | 
480 | An element's parent element.
481 | 
482 | </td>
483 | </tr>
484 | <tr>
485 | <td colspan="2" valign="top"><strong>siblings</strong></td>
486 | <td valign="top">[<a href="#element">Element</a>]</td>
487 | <td>
488 | 
489 | All elements which are at the same level in the tree as the current element, ie. the children of the current element's parent. Includes the current element.
490 | 
491 | </td>
492 | </tr>
493 | <tr>
494 | <td colspan="2" valign="top"><strong>next</strong></td>
495 | <td valign="top"><a href="#element">Element</a></td>
496 | <td>
497 | 
498 | The current element's next sibling. Includes text nodes. Equivalent to [Node.nextSibling](https://developer.mozilla.org/en-US/docs/Web/API/Node/nextSibling).
499 | 
500 | </td>
501 | </tr>
502 | <tr>
503 | <td colspan="2" valign="top"><strong>nextAll</strong></td>
504 | <td valign="top">[<a href="#element">Element</a>]</td>
505 | <td>
506 | 
507 | All of the current element's next siblings
508 | 
509 | </td>
510 | </tr>
511 | <tr>
512 | <td colspan="2" valign="top"><strong>previous</strong></td>
513 | <td valign="top"><a href="#element">Element</a></td>
514 | <td>
515 | 
516 | The current element's previous sibling. Includes text nodes. Equivalent to [Node.previousSibling](https://developer.mozilla.org/en-US/docs/Web/API/Node/nextSibling).
517 | 
518 | </td>
519 | </tr>
520 | <tr>
521 | <td colspan="2" valign="top"><strong>previousAll</strong></td>
522 | <td valign="top">[<a href="#element">Element</a>]</td>
523 | <td>
524 | 
525 | All of the current element's previous siblings
526 | 
527 | </td>
528 | </tr>
529 | <tr>
530 | <td colspan="2" valign="top"><strong>visit</strong></td>
531 | <td valign="top"><a href="#document">Document</a></td>
532 | <td>
533 | 
534 | If the element is a link, visit the page linked to in the href attribute.
535 | 
536 | </td>
537 | </tr>
538 | </tbody>
539 | </table>
540 | 
541 | ## Scalars
542 | 
543 | ### Boolean
544 | 
545 | The `Boolean` scalar type represents `true` or `false`.
546 | 
547 | ### String
548 | 
549 | The `String` scalar type represents textual data, represented as UTF-8 character sequences. The String type is most often used by GraphQL to represent free-form human-readable text.
550 | 
551 | 
552 | ## Interfaces
553 | 
554 | 
555 | ### Node
556 | 
557 | A DOM node (either an Element or a Document).
558 | 
559 | <table>
560 | <thead>
561 | <tr>
562 | <th align="left">Field</th>
563 | <th align="right">Argument</th>
564 | <th align="left">Type</th>
565 | <th align="left">Description</th>
566 | </tr>
567 | </thead>
568 | <tbody>
569 | <tr>
570 | <td colspan="2" valign="top"><strong>content</strong></td>
571 | <td valign="top"><a href="#string">String</a></td>
572 | <td>
573 | 
574 | The HTML content of the subnodes
575 | 
576 | </td>
577 | </tr>
578 | <tr>
579 | <td colspan="2" align="right" valign="top">selector</td>
580 | <td valign="top"><a href="#string">String</a></td>
581 | <td>
582 | 
583 | A [CSS selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Introduction_to_CSS/Selectors).
584 | 
585 | </td>
586 | </tr>
587 | <tr>
588 | <td colspan="2" valign="top"><strong>html</strong></td>
589 | <td valign="top"><a href="#string">String</a></td>
590 | <td>
591 | 
592 | The HTML content of the selected DOM node
593 | 
594 | </td>
595 | </tr>
596 | <tr>
597 | <td colspan="2" align="right" valign="top">selector</td>
598 | <td valign="top"><a href="#string">String</a></td>
599 | <td>
600 | 
601 | A [CSS selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Introduction_to_CSS/Selectors).
602 | 
603 | </td>
604 | </tr>
605 | <tr>
606 | <td colspan="2" valign="top"><strong>text</strong></td>
607 | <td valign="top"><a href="#string">String</a></td>
608 | <td>
609 | 
610 | The text content of the selected DOM node
611 | 
612 | </td>
613 | </tr>
614 | <tr>
615 | <td colspan="2" align="right" valign="top">selector</td>
616 | <td valign="top"><a href="#string">String</a></td>
617 | <td>
618 | 
619 | A [CSS selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Introduction_to_CSS/Selectors).
620 | 
621 | </td>
622 | </tr>
623 | <tr>
624 | <td colspan="2" valign="top"><strong>tag</strong></td>
625 | <td valign="top"><a href="#string">String</a></td>
626 | <td>
627 | 
628 | The tag name of the selected DOM node
629 | 
630 | </td>
631 | </tr>
632 | <tr>
633 | <td colspan="2" align="right" valign="top">selector</td>
634 | <td valign="top"><a href="#string">String</a></td>
635 | <td>
636 | 
637 | A [CSS selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Introduction_to_CSS/Selectors).
638 | 
639 | </td>
640 | </tr>
641 | <tr>
642 | <td colspan="2" valign="top"><strong>attr</strong></td>
643 | <td valign="top"><a href="#string">String</a></td>
644 | <td>
645 | 
646 | An attribute of the selected node (eg. `href`, `src`, etc.).
647 | 
648 | </td>
649 | </tr>
650 | <tr>
651 | <td colspan="2" align="right" valign="top">selector</td>
652 | <td valign="top"><a href="#string">String</a></td>
653 | <td>
654 | 
655 | A [CSS selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Introduction_to_CSS/Selectors).
656 | 
657 | </td>
658 | </tr>
659 | <tr>
660 | <td colspan="2" align="right" valign="top">name</td>
661 | <td valign="top"><a href="#string">String</a>!</td>
662 | <td>
663 | 
664 | The name of the attribute
665 | 
666 | </td>
667 | </tr>
668 | <tr>
669 | <td colspan="2" valign="top"><strong>has</strong></td>
670 | <td valign="top"><a href="#boolean">Boolean</a></td>
671 | <td>
672 | 
673 | Returns true if an element with the given selector exists.
674 | 
675 | </td>
676 | </tr>
677 | <tr>
678 | <td colspan="2" align="right" valign="top">selector</td>
679 | <td valign="top"><a href="#string">String</a></td>
680 | <td>
681 | 
682 | A [CSS selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Introduction_to_CSS/Selectors).
683 | 
684 | </td>
685 | </tr>
686 | <tr>
687 | <td colspan="2" valign="top"><strong>query</strong></td>
688 | <td valign="top"><a href="#element">Element</a></td>
689 | <td>
690 | 
691 | Equivalent to [Element.querySelector](https://developer.mozilla.org/en-US/docs/Web/API/Element/querySelector). The selectors of any nested queries will be scoped to the resulting element.
692 | 
693 | </td>
694 | </tr>
695 | <tr>
696 | <td colspan="2" align="right" valign="top">selector</td>
697 | <td valign="top"><a href="#string">String</a></td>
698 | <td>
699 | 
700 | A [CSS selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Introduction_to_CSS/Selectors).
701 | 
702 | </td>
703 | </tr>
704 | <tr>
705 | <td colspan="2" valign="top"><strong>queryAll</strong></td>
706 | <td valign="top">[<a href="#element">Element</a>]</td>
707 | <td>
708 | 
709 | Equivalent to [Element.querySelectorAll](https://developer.mozilla.org/en-US/docs/Web/API/Element/querySelectorAll). The selectors of any nested queries will be scoped to the resulting elements.
710 | 
711 | </td>
712 | </tr>
713 | <tr>
714 | <td colspan="2" align="right" valign="top">selector</td>
715 | <td valign="top"><a href="#string">String</a></td>
716 | <td>
717 | 
718 | A [CSS selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Introduction_to_CSS/Selectors).
719 | 
720 | </td>
721 | </tr>
722 | <tr>
723 | <td colspan="2" valign="top"><strong>children</strong></td>
724 | <td valign="top">[<a href="#element">Element</a>]</td>
725 | <td>
726 | 
727 | An element's child elements.
728 | 
729 | </td>
730 | </tr>
731 | <tr>
732 | <td colspan="2" valign="top"><strong>parent</strong></td>
733 | <td valign="top"><a href="#element">Element</a></td>
734 | <td>
735 | 
736 | An element's parent element.
737 | 
738 | </td>
739 | </tr>
740 | <tr>
741 | <td colspan="2" valign="top"><strong>siblings</strong></td>
742 | <td valign="top">[<a href="#element">Element</a>]</td>
743 | <td>
744 | 
745 | All elements which are at the same level in the tree as the current element, ie. the children of the current element's parent. Includes the current element.
746 | 
747 | </td>
748 | </tr>
749 | <tr>
750 | <td colspan="2" valign="top"><strong>next</strong></td>
751 | <td valign="top"><a href="#element">Element</a></td>
752 | <td>
753 | 
754 | The current element's next sibling. Includes text nodes. Equivalent to [Node.nextSibling](https://developer.mozilla.org/en-US/docs/Web/API/Node/nextSibling).
755 | 
756 | </td>
757 | </tr>
758 | <tr>
759 | <td colspan="2" valign="top"><strong>nextAll</strong></td>
760 | <td valign="top">[<a href="#element">Element</a>]</td>
761 | <td>
762 | 
763 | All of the current element's next siblings
764 | 
765 | </td>
766 | </tr>
767 | <tr>
768 | <td colspan="2" valign="top"><strong>previous</strong></td>
769 | <td valign="top"><a href="#element">Element</a></td>
770 | <td>
771 | 
772 | The current element's previous sibling. Includes text nodes. Equivalent to [Node.previousSibling](https://developer.mozilla.org/en-US/docs/Web/API/Node/nextSibling).
773 | 
774 | </td>
775 | </tr>
776 | <tr>
777 | <td colspan="2" valign="top"><strong>previousAll</strong></td>
778 | <td valign="top">[<a href="#element">Element</a>]</td>
779 | <td>
780 | 
781 | All of the current element's previous siblings
782 | 
783 | </td>
784 | </tr>
785 | </tbody>
786 | </table>
787 | 


--------------------------------------------------------------------------------
/examples/hackernews.graphql:
--------------------------------------------------------------------------------
 1 | {
 2 |   page(url: "http://news.ycombinator.com") {
 3 |     items: queryAll(selector: "tr.athing") {
 4 |       rank: text(selector: "td span.rank")
 5 |       title: text(selector: "td.title a")
 6 |       sitebit: text(selector: "span.comhead a")
 7 |       url: attr(selector: "td.title a", name: "href")
 8 |       attrs: next {
 9 |         score: text(selector: "span.score")
10 |         user: text(selector: "a:first-of-type")
11 |         comments: text(selector: "a:nth-of-type(3)")
12 |       }
13 |     }
14 |   }
15 | }


--------------------------------------------------------------------------------
/examples/source.graphql:
--------------------------------------------------------------------------------
1 | {
2 |   page(source: "<html><body><p>you can pass in HTML!</p></body></html>") {
3 |     text(selector: "p")
4 |   }
5 | }


--------------------------------------------------------------------------------
/package.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "name": "graphql-scraper",
 3 |   "version": "1.2.1",
 4 |   "description": "Extract structured data from the web using GraphQL.",
 5 |   "author": "harry lachenmayer <harrylachenmayer@gmail.com>",
 6 |   "license": "MIT",
 7 |   "main": "build/index.js",
 8 |   "bin": "bin.js",
 9 |   "scripts": {
10 |     "build": "tsc",
11 |     "dev": "tsc -w",
12 |     "test": "tsc; ava build/__tests__/",
13 |     "generate-docs": "graphql-markdown ./build/index.js > doc/schema.md"
14 |   },
15 |   "dependencies": {
16 |     "chalk": "^2.3.0",
17 |     "execa": "^0.9.0",
18 |     "get-stdin": "^5.0.1",
19 |     "graphql": "^0.12.3",
20 |     "isomorphic-fetch": "^2.2.1",
21 |     "jsdom": "^11.5.1",
22 |     "minimist": "^1.2.0"
23 |   },
24 |   "devDependencies": {
25 |     "@types/graphql": "^0.12.0",
26 |     "@types/jsdom": "^11.0.4",
27 |     "ava": "^0.24.0",
28 |     "graphql-markdown": "^3.2.0",
29 |     "typescript": "^2.6.2"
30 |   }
31 | }
32 | 


--------------------------------------------------------------------------------
/readme.md:
--------------------------------------------------------------------------------
  1 | # graphql-scraper
  2 | 
  3 | ![](screenshot.png)
  4 | 
  5 | [GraphQL](http://graphql.org/) lets us query all sorts of graph-shaped data - so why not use it to query the world's most useful graph, **the web**?
  6 | 
  7 | `graphql-scraper` is a command-line tool and reusable GraphQL schema which lets you easily extract data from HTML.
  8 | 
  9 | [**Check out a live demo here.**](https://graphqlbin.com/W6nkfX) You can easily spin up your own by using [`graphql-scraper-server`](https://github.com/lachenmayer/graphql-scraper-server).
 10 | 
 11 | ## The command-line tool
 12 | 
 13 | ```
 14 | npx graphql-scraper <query-file>
 15 | ```
 16 | 
 17 | or
 18 | 
 19 | ```
 20 | npm install -g graphql-scraper
 21 | graphql-scraper <query-file>
 22 | ```
 23 | 
 24 | Reads a GraphQL query from the path `query-file`, and prints the result.
 25 | 
 26 | If `query-file` is not given, reads the query from stdin.
 27 | 
 28 | ### Command-line options
 29 | 
 30 | - `--json` Returns the result in JSON format, for use in other tools.
 31 | - `--help` Prints a help string.
 32 | 
 33 | ### Variables
 34 | 
 35 | Any other named options you pass to the CLI will be used as a [query variable](http://graphql.org/learn/queries/#variables).
 36 | 
 37 | For example, if you want to reuse the same query on several pages, you could write the following query file (`query.graphql`):
 38 | 
 39 | ```graphql
 40 | query ExampleQueryWithVariable($page: String) {
 41 |   page(url: $page) {
 42 |     items: queryAll(selector: "tr.athing") {
 43 |       rank: text(selector: "td span.rank")
 44 |       title: text(selector: "td.title a")
 45 |       sitebit: text(selector: "span.comhead a")
 46 |       url: attr(selector: "td.title a", name: "href")
 47 |       attrs: next {
 48 |         score: text(selector: "span.score")
 49 |         user: text(selector: "a:first-of-type")
 50 |         comments: text(selector: "a:nth-of-type(3)")
 51 |       }
 52 |     }
 53 |   }
 54 | }
 55 | ```
 56 | 
 57 | ...and execute the query like this:
 58 | 
 59 | ```bash
 60 | graphql-scraper query.graphql --page="https://news.ycombinator.com/"
 61 | ```
 62 | 
 63 | ## The schema
 64 | 
 65 | You can check out an [auto-generated schema description here](doc/schema.md), but I recommend trying out the [graphql-scraper-server](https://github.com/lachenmayer/graphql-scraper-server) example and exploring the types interactively. You can also play around with the schema in the [live demo](https://graphqlbin.com/W6nkfX).
 66 | 
 67 | ## Re-using the schema in your own projects
 68 | 
 69 | The npm package exports the GraphQL schema which is used by the command-line tool. This an instance of graphql-js [`GraphQLSchema`](http://graphql.org/graphql-js/type/#graphqlschema), which you can use anywhere that expects a schema, for example [`apollo-server`](https://www.apollographql.com/docs/apollo-server/) or [`graphql-yoga`](https://github.com/graphcool/graphql-yoga).
 70 | 
 71 | Use `npm install graphql-scraper` or `yarn add graphql-scraper` to add the schema to your project.
 72 | 
 73 | ### Basic example with `graphql`
 74 | 
 75 | ```js
 76 | import { graphql } from 'graphql'
 77 | import schema from 'graphql-scraper'
 78 | // You can also import it as follows:
 79 | // const schema = require('graphql-scraper')
 80 | 
 81 | 
 82 | const query = `
 83 | {
 84 |   page(url: "http://news.ycombinator.com") {
 85 |     items: queryAll(selector: "tr.athing") {
 86 |       rank: text(selector: "td span.rank")
 87 |       title: text(selector: "td.title a")
 88 |       sitebit: text(selector: "span.comhead a")
 89 |       url: attr(selector: "td.title a", name: "href")
 90 |       attrs: next {
 91 |         score: text(selector: "span.score")
 92 |         user: text(selector: "a:first-of-type")
 93 |         comments: text(selector: "a:nth-of-type(3)")
 94 |       }
 95 |     }
 96 |   }
 97 | }
 98 | `
 99 | 
100 | graphql(schema, query).then(response => {
101 |   console.log(response)
102 | })
103 | ```
104 | 
105 | ## Background
106 | 
107 | This project was inspired by [`gdom`](https://github.com/syrusakbary/gdom), which is written in Python and uses the [Graphene](http://graphene-python.org/) GraphQL library.
108 | 
109 | If you want to switch over from `gdom`, please note some schema changes:
110 | 
111 | - `query(selector: String!)` now only returns a single `Element`, rather than a list (like `document.querySelector`). Added a new `queryAll(selector: String!): [Element]` field, which behaves like `document.querySelectorAll`.
112 | - `is(selector: String!)` is renamed to `has(selector: String!)`.
113 | - `children`, `parent`, `siblings`, `next` etc. no longer have a `selector` argument. If you need to select children with a specific selector, use [child selectors](https://developer.mozilla.org/en-US/docs/Web/CSS/Child_selectors) (`.foo > .bar`).
114 | - `parents` is removed.
115 | - `prev[All]` is renamed to `previous[All]`.
116 | 
117 | ## Maintainers
118 | 
119 | [@lachenmayer](https://github.com/lachenmayer)
120 | 
121 | ## Contribute
122 | 
123 | PRs accepted.
124 | 
125 | ## License
126 | 
127 | MIT © 2018 harry lachenmayer
128 | 


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/src/__tests__/__snapshots__/bin.js.md:
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 1 | # Snapshot report for `build/__tests__/bin.js`
 2 | 
 3 | The actual snapshot is saved in `bin.js.snap`.
 4 | 
 5 | Generated by [AVA](https://ava.li).
 6 | 
 7 | ## it formats errors nicely
 8 | 
 9 | > Snapshot 1
10 | 
11 |     `Errors:␊
12 |     { GraphQLError: Syntax Error: Unexpected Name "garbage"␊
13 |         at syntaxError (/Users/harry/Documents/Projects/graphql-scraper/node_modules/graphql/error/syntaxError.js:24:10)␊
14 |         at unexpected (/Users/harry/Documents/Projects/graphql-scraper/node_modules/graphql/language/parser.js:1312:33)␊
15 |         at parseDefinition (/Users/harry/Documents/Projects/graphql-scraper/node_modules/graphql/language/parser.js:152:9)␊
16 |         at parseDocument (/Users/harry/Documents/Projects/graphql-scraper/node_modules/graphql/language/parser.js:110:22)␊
17 |         at parse (/Users/harry/Documents/Projects/graphql-scraper/node_modules/graphql/language/parser.js:38:10)␊
18 |         at graphqlImpl (/Users/harry/Documents/Projects/graphql-scraper/node_modules/graphql/graphql.js:100:34)␊
19 |         at /Users/harry/Documents/Projects/graphql-scraper/node_modules/graphql/graphql.js:66:223␊
20 |         at new Promise (<anonymous>)␊
21 |         at graphql (/Users/harry/Documents/Projects/graphql-scraper/node_modules/graphql/graphql.js:63:10)␊
22 |         at main (/Users/harry/Documents/Projects/graphql-scraper/bin.js:78:24)␊
23 |       message: 'Syntax Error: Unexpected Name "garbage"',␊
24 |       locations: [ { line: 1, column: 1 } ],␊
25 |       path: undefined }␊
26 |     Your query has errors, see above.`
27 | 
28 | ## it formats output nicely
29 | 
30 | > Snapshot 1
31 | 
32 |     `Data:␊
33 |     { page: { text: 'you can pass in HTML!' } }`
34 | 
35 | ## it runs a query from a file
36 | 
37 | > Snapshot 1
38 | 
39 |     '{"data":{"page":{"text":"you can pass in HTML!"}}}'
40 | 
41 | ## it runs a query from stdin
42 | 
43 | > Snapshot 1
44 | 
45 |     '{"data":{"page":{"title":"some test site","main":"looking good"}}}'
46 | 


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/src/__tests__/bin.ts:
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 1 | import test from 'ava'
 2 | import { createServer } from 'http'
 3 | const execa = require('execa')
 4 | 
 5 | test('it runs a query from stdin', async t => {
 6 |   const server = createServer((req, res) =>
 7 |     res.end(`
 8 | <html>
 9 | <head>
10 | <title>some test site</title>
11 | </head>
12 | <body>
13 | <main>looking good</main>
14 | </body>
15 | </html>
16 | `)
17 |   )
18 |   server.listen(13338)
19 | 
20 |   const query = `
21 | {
22 |   page(url: "http://localhost:13338") {
23 |     title: text(selector: "title")
24 |     main: text(selector: "main")
25 |   }
26 | }
27 |   `
28 | 
29 |   const output = await execa.stdout('./bin.js', ['--json'], { input: query })
30 |   t.snapshot(output)
31 | 
32 |   server.close()
33 | })
34 | 
35 | test('it runs a query from a file', async t => {
36 |   const output = await execa.stdout('./bin.js', [
37 |     'examples/source.graphql',
38 |     '--json',
39 |   ])
40 |   t.snapshot(output)
41 | })
42 | 
43 | test('it formats output nicely', async t => {
44 |   const output = await execa.stdout('./bin.js', ['examples/source.graphql'])
45 |   t.snapshot(output)
46 | })
47 | 
48 | test('it formats errors nicely', async t => {
49 |   const output = await execa.stdout('./bin.js', { input: 'garbage' })
50 |   t.snapshot(output)
51 | })
52 | 


--------------------------------------------------------------------------------
/src/__tests__/index.ts:
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  1 | import test from 'ava'
  2 | import * as GraphQL from 'graphql'
  3 | const { graphql } = GraphQL
  4 | import { createServer } from 'http'
  5 | 
  6 | import schema from '../'
  7 | const requiredSchema = require('../')
  8 | 
  9 | test('es6 & commonjs imports work', t => {
 10 |   t.is(schema, requiredSchema)
 11 | })
 12 | 
 13 | test('no args throws errors', async t => {
 14 |   const query = `{ page { title } }`
 15 |   const response = await graphql(schema, query)
 16 |   t.is(
 17 |     response && response.errors && response.errors[0].message,
 18 |     'You need to provide either a URL or a HTML source string.'
 19 |   )
 20 | })
 21 | 
 22 | test('title', async t => {
 23 |   const html = `<html><head><title>some title</title></head><body></body></html>`
 24 |   const query = `{ page(source: "${html}") { title } }`
 25 |   const response = await graphql(schema, query)
 26 |   t.false('errors' in response)
 27 |   t.is(response.data && response.data.page.title, 'some title')
 28 | })
 29 | 
 30 | test('from url', async t => {
 31 |   const server = createServer((req, res) => {
 32 |     res.end(`<html><head><title>some title</title></head><body></body></html>`)
 33 |   })
 34 |   server.listen(13337)
 35 |   const query = `{ page(url: "http://localhost:13337/") { title } }`
 36 |   const response = await graphql(schema, query)
 37 |   t.false('errors' in response)
 38 |   t.is(response.data && response.data.page.title, 'some title')
 39 |   server.close()
 40 | })
 41 | 
 42 | test('content', async t => {
 43 |   const html = `<html><head><title>some title</title></head><body>some body</body></html>`
 44 |   const query = `{ page(source: "${html}") { content } }`
 45 |   const response = await graphql(schema, query)
 46 |   t.false('errors' in response)
 47 |   t.is(
 48 |     response.data && response.data.page.content,
 49 |     '<head><title>some title</title></head><body>some body</body>'
 50 |   )
 51 | })
 52 | 
 53 | test('content with selector', async t => {
 54 |   const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong></div></body></html>`
 55 |   const query = `{
 56 |     page(source: "${html}") {
 57 |       content(selector: ".selectme")
 58 |     }
 59 |   }`
 60 |   const response = await graphql(schema, query)
 61 |   t.false('errors' in response)
 62 |   t.is(response.data && response.data.page.content, '<strong>bad</strong>')
 63 | })
 64 | 
 65 | test('not existing selector', async t => {
 66 |   const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong></div></body></html>`
 67 |   const query = `{
 68 |     page(source: "${html}") {
 69 |       content(selector: ".selectmenot")
 70 |     }
 71 |   }`
 72 |   const response = await graphql(schema, query)
 73 |   t.false('errors' in response)
 74 |   t.is(response.data && response.data.page.content, null)
 75 | })
 76 | 
 77 | test('html', async t => {
 78 |   const html = `<html><head><title>some title</title></head><body>some body</body></html>`
 79 |   const query = `{ page(source: "${html}") { html } }`
 80 |   const response = await graphql(schema, query)
 81 |   t.false('errors' in response)
 82 |   t.is(response.data && response.data.page.html, html)
 83 | })
 84 | 
 85 | test('html with selector', async t => {
 86 |   const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong></div></body></html>`
 87 |   const query = `{
 88 |     page(source: "${html}") {
 89 |       html(selector: ".selectme")
 90 |     }
 91 |   }`
 92 |   const response = await graphql(schema, query)
 93 |   t.false('errors' in response)
 94 |   t.is(
 95 |     response.data && response.data.page.html,
 96 |     '<div class="selectme"><strong>bad</strong></div>'
 97 |   )
 98 | })
 99 | 
100 | test('text', async t => {
101 |   const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong></div></body></html>`
102 |   const query = `{
103 |     page(source: "${html}") {
104 |       text
105 |     }
106 |   }`
107 |   const response = await graphql(schema, query)
108 |   t.false('errors' in response)
109 |   t.is(response.data && response.data.page.text, 'some titlebad')
110 | })
111 | 
112 | test('text with selector', async t => {
113 |   const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong></div></body></html>`
114 |   const query = `{
115 |     page(source: "${html}") {
116 |       text(selector: ".selectme")
117 |     }
118 |   }`
119 |   const response = await graphql(schema, query)
120 |   t.false('errors' in response)
121 |   t.is(response.data && response.data.page.text, 'bad')
122 | })
123 | 
124 | test('tag', async t => {
125 |   const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong></div></body></html>`
126 |   const query = `{
127 |     page(source: "${html}") {
128 |       tag
129 |     }
130 |   }`
131 |   const response = await graphql(schema, query)
132 |   t.false('errors' in response)
133 |   t.is(response.data && response.data.page.tag, 'HTML')
134 | })
135 | 
136 | test('tag with selector', async t => {
137 |   const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong></div></body></html>`
138 |   const query = `{
139 |     page(source: "${html}") {
140 |       tag(selector: ".selectme")
141 |     }
142 |   }`
143 |   const response = await graphql(schema, query)
144 |   t.false('errors' in response)
145 |   t.is(response.data && response.data.page.tag, 'DIV')
146 | })
147 | 
148 | test('attr', async t => {
149 |   const html = `<html style=\\"background: red;\\"><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong></div></body></html>`
150 |   const query = `{
151 |     page(source: "${html}") {
152 |       attr(name: "style")
153 |     }
154 |   }`
155 |   const response = await graphql(schema, query)
156 |   t.false('errors' in response)
157 |   t.is(response.data && response.data.page.attr, 'background: red;')
158 | })
159 | 
160 | test('wacky attr', async t => {
161 |   const html = `<html style=\\"background: red;\\"><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong></div></body></html>`
162 |   const query = `{
163 |     page(source: "${html}") {
164 |       attr(name: "asdf")
165 |     }
166 |   }`
167 |   const response = await graphql(schema, query)
168 |   t.false('errors' in response)
169 |   t.is(response.data && response.data.page.attr, null)
170 | })
171 | 
172 | test('attr with selector', async t => {
173 |   const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong></div></body></html>`
174 |   const query = `{
175 |     page(source: "${html}") {
176 |       attr(selector: ".selectme", name: "class")
177 |     }
178 |   }`
179 |   const response = await graphql(schema, query)
180 |   t.false('errors' in response)
181 |   t.is(response.data && response.data.page.attr, 'selectme')
182 | })
183 | 
184 | test('has', async t => {
185 |   const html = `<html><head><title>some title</title></head><body><div class=\\"one\\"><strong>one</strong></div><div class=\\"two\\"><strong>two</strong></div></body></html>`
186 |   const query = `{
187 |     page(source: "${html}") {
188 |       firstDiv: query(selector: "div") {
189 |         isStrong: has(selector: "strong")
190 |       }
191 |     }
192 |   }`
193 |   const response = await graphql(schema, query)
194 |   t.false('errors' in response)
195 |   t.true(response.data && response.data.page.firstDiv.isStrong)
196 | })
197 | 
198 | test('has not', async t => {
199 |   const html = `<html><head><title>some title</title></head><body><div class=\\"one\\"><strong>one</strong></div><div class=\\"two\\"><strong>two</strong></div></body></html>`
200 |   const query = `{
201 |     page(source: "${html}") {
202 |       firstDiv: query(selector: "div") {
203 |         isWeak: has(selector: "weak")
204 |       }
205 |     }
206 |   }`
207 |   const response = await graphql(schema, query)
208 |   t.false('errors' in response)
209 |   t.true(response.data && !response.data.page.firstDiv.isWeak)
210 | })
211 | 
212 | test('query', async t => {
213 |   const html = `<html><head><title>some title</title></head><body><div class=\\"one\\"><strong>one</strong></div><div class=\\"two\\"><strong>two</strong></div></body></html>`
214 |   const query = `{
215 |     page(source: "${html}") {
216 |       firstDiv: query(selector: "div") {
217 |         text
218 |       }
219 |     }
220 |   }`
221 |   const response = await graphql(schema, query)
222 |   t.false('errors' in response)
223 |   t.deepEqual(response.data && response.data.page.firstDiv, { text: 'one' })
224 | })
225 | 
226 | test('queryAll', async t => {
227 |   const html = `<html><head><title>some title</title></head><body><div class=\\"one\\"><strong>one</strong></div><div class=\\"two\\"><strong>two</strong></div></body></html>`
228 |   const query = `{
229 |     page(source: "${html}") {
230 |       divs: queryAll(selector: "div") {
231 |         text
232 |       }
233 |     }
234 |   }`
235 |   const response = await graphql(schema, query)
236 |   t.false('errors' in response)
237 |   t.deepEqual(response.data && response.data.page.divs, [
238 |     { text: 'one' },
239 |     { text: 'two' },
240 |   ])
241 | })
242 | 
243 | test('children', async t => {
244 |   const html = `<html><head><title>some title</title></head><body><div class=\\"one\\"><strong>one</strong><strong>two</strong></div><div class=\\"two\\"><strong>two</strong><strong>three</strong></div></body></html>`
245 |   const query = `{
246 |     page(source: "${html}") {
247 |       kids: queryAll(selector: "div") {
248 |         children {
249 |           text
250 |         }
251 |       }
252 |     }
253 |   }`
254 |   const response = await graphql(schema, query)
255 |   t.false('errors' in response)
256 |   t.deepEqual(response.data && response.data.page.kids, [
257 |     {
258 |       children: [{ text: 'one' }, { text: 'two' }],
259 |     },
260 |     {
261 |       children: [{ text: 'two' }, { text: 'three' }],
262 |     },
263 |   ])
264 | })
265 | 
266 | test('childNodes', async t => {
267 |   const html = `<html><head><title>some title</title></head><body><div class=\\"one\\">one<strong>two</strong></div><div class=\\"two\\"><strong>two</strong>amazing<strong>three</strong></div></body></html>`
268 |   const query = `{
269 |     page(source: "${html}") {
270 |       kids: queryAll(selector: "div") {
271 |         childNodes {
272 |           text
273 |         }
274 |       }
275 |     }
276 |   }`
277 |   const response = await graphql(schema, query)
278 |   t.false('errors' in response)
279 |   t.deepEqual(response.data && response.data.page.kids, [
280 |     {
281 |       childNodes: [{ text: 'one' }, { text: 'two' }],
282 |     },
283 |     {
284 |       childNodes: [{ text: 'two' }, {text: 'amazing'}, { text: 'three' }],
285 |     },
286 |   ])
287 | })
288 | 
289 | test('parent', async t => {
290 |   const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong></div></body></html>`
291 |   const query = `{
292 |     page(source: "${html}") {
293 |       query(selector: "strong") {
294 |         parent {
295 |           attr(name: "class")
296 |         }
297 |       }
298 |     }
299 |   }`
300 |   const response = await graphql(schema, query)
301 |   t.false('errors' in response)
302 |   t.is(response.data && response.data.page.query.parent.attr, 'selectme')
303 | })
304 | 
305 | test('siblings', async t => {
306 |   const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong><p>boom</p><span>bap</span></div></body></html>`
307 |   const query = `{
308 |     page(source: "${html}") {
309 |       query(selector: "strong") {
310 |         siblings {
311 |           text
312 |         }
313 |       }
314 |     }
315 |   }`
316 |   const response = await graphql(schema, query)
317 |   t.false('errors' in response)
318 |   t.deepEqual(response.data && response.data.page.query.siblings, [
319 |     { text: 'bad' },
320 |     { text: 'boom' },
321 |     { text: 'bap' },
322 |   ])
323 | })
324 | 
325 | test('siblings of root is only html', async t => {
326 |   const html = `<!doctype html><html><head></head><body>nothing to see here</body></html>`
327 |   const query = `{
328 |     page(source: "${html}") {
329 |       siblings {
330 |         tag
331 |       }
332 |     }
333 |   }`
334 |   const response = await graphql(schema, query)
335 |   t.false('errors' in response)
336 |   t.deepEqual(response.data && response.data.page.siblings, [{ tag: 'HTML' }])
337 | })
338 | 
339 | test('next', async t => {
340 |   const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong><p>boom</p><span>bap</span></div></body></html>`
341 |   const query = `{
342 |     page(source: "${html}") {
343 |       query(selector: "strong") {
344 |         next {
345 |           text
346 |         }
347 |       }
348 |     }
349 |   }`
350 |   const response = await graphql(schema, query)
351 |   t.false('errors' in response)
352 |   t.is(response.data && response.data.page.query.next.text, 'boom')
353 | })
354 | 
355 | test('next - bare text', async t => {
356 |   const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong>bare text<span>bap</span></div></body></html>`
357 |   const query = `{
358 |     page(source: "${html}") {
359 |       query(selector: "strong") {
360 |         next {
361 |           tag
362 |           text
363 |         }
364 |       }
365 |     }
366 |   }`
367 |   const response = await graphql(schema, query)
368 |   t.false('errors' in response)
369 |   t.is(response.data && response.data.page.query.next.tag, null)
370 |   t.is(response.data && response.data.page.query.next.text, 'bare text')
371 | })
372 | 
373 | test('nextAll', async t => {
374 |   const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong>bare text<span>bap</span></div></body></html>`
375 |   const query = `{
376 |     page(source: "${html}") {
377 |       query(selector: "strong") {
378 |         nextAll {
379 |           tag
380 |           text
381 |         }
382 |       }
383 |     }
384 |   }`
385 |   const response = await graphql(schema, query)
386 |   t.false('errors' in response)
387 |   t.deepEqual(response.data && response.data.page.query.nextAll, [
388 |     { tag: null, text: 'bare text' },
389 |     { tag: 'SPAN', text: 'bap' },
390 |   ])
391 | })
392 | 
393 | test('previous', async t => {
394 |   const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong><p>boom</p><span>bap</span></div></body></html>`
395 |   const query = `{
396 |     page(source: "${html}") {
397 |       query(selector: "span") {
398 |         previous {
399 |           text
400 |         }
401 |       }
402 |     }
403 |   }`
404 |   const response = await graphql(schema, query)
405 |   t.false('errors' in response)
406 |   t.is(response.data && response.data.page.query.previous.text, 'boom')
407 | })
408 | 
409 | test('previousAll', async t => {
410 |   const html = `<html><head><title>some title</title></head><body><div class=\\"selectme\\"><strong>bad</strong>bare text<span>bap</span></div></body></html>`
411 |   const query = `{
412 |     page(source: "${html}") {
413 |       query(selector: "span") {
414 |         previousAll {
415 |           tag
416 |           text
417 |         }
418 |       }
419 |     }
420 |   }`
421 |   const response = await graphql(schema, query)
422 |   t.false('errors' in response)
423 |   t.deepEqual(response.data && response.data.page.query.previousAll, [
424 |     { tag: 'STRONG', text: 'bad' },
425 |     { tag: null, text: 'bare text' },
426 |   ])
427 | })
428 | 
429 | test('visit', async t => {
430 |   const server = createServer((req, res) => {
431 |     if (req.url === '/link') {
432 |       res.end(
433 |         `<html><body><strong>we managed to visit the link!</strong></body></html>`
434 |       )
435 |     } else {
436 |       res.end(`<html><body><a href="/link">come on in</a></body></html>`)
437 |     }
438 |   })
439 |   server.listen(13339)
440 | 
441 |   const query = `{
442 |       page(url: "http://localhost:13339/") {
443 |         link: query(selector: "a") {
444 |           visit {
445 |             text(selector: "strong")
446 |           }
447 |         }
448 |       }
449 |     }`
450 |   const response = await graphql(schema, query)
451 |   t.false('errors' in response)
452 |   t.is(
453 |     response.data && response.data.page.link.visit.text,
454 |     'we managed to visit the link!'
455 |   )
456 |   server.close()
457 | })
458 | 


--------------------------------------------------------------------------------
/src/index.ts:
--------------------------------------------------------------------------------
  1 | import {
  2 |   GraphQLSchema,
  3 |   GraphQLString,
  4 |   GraphQLBoolean,
  5 |   GraphQLObjectType,
  6 |   GraphQLNonNull,
  7 |   GraphQLInterfaceType,
  8 |   GraphQLList,
  9 |   GraphQLFieldConfigMap,
 10 |   GraphQLObjectTypeConfig,
 11 |   GraphQLInterfaceTypeConfig,
 12 | } from 'graphql'
 13 | import { JSDOM } from 'jsdom'
 14 | import { resolve } from 'url'
 15 | 
 16 | function sharedFields(): GraphQLFieldConfigMap<Element, any> {
 17 |   const selector = {
 18 |     type: GraphQLString,
 19 |     description:
 20 |       'A [CSS selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Introduction_to_CSS/Selectors).',
 21 |   }
 22 |   return {
 23 |     content: {
 24 |       type: GraphQLString,
 25 |       description: 'The HTML content of the subnodes',
 26 |       args: { selector },
 27 |       resolve(element, { selector }) {
 28 |         element = selector ? element.querySelector(selector) : element
 29 |         return element && element.innerHTML
 30 |       },
 31 |     },
 32 |     html: {
 33 |       type: GraphQLString,
 34 |       description: 'The HTML content of the selected DOM node',
 35 |       args: { selector },
 36 |       resolve(element, { selector }) {
 37 |         element = selector ? element.querySelector(selector) : element
 38 |         return element && element.outerHTML
 39 |       },
 40 |     },
 41 |     text: {
 42 |       type: GraphQLString,
 43 |       description: 'The text content of the selected DOM node',
 44 |       args: { selector },
 45 |       resolve(element, { selector }) {
 46 |         element = selector ? element.querySelector(selector) : element
 47 |         return element && element.textContent
 48 |       },
 49 |     },
 50 |     tag: {
 51 |       type: GraphQLString,
 52 |       description: 'The tag name of the selected DOM node',
 53 |       args: { selector },
 54 |       resolve(element, { selector }) {
 55 |         element = selector ? element.querySelector(selector) : element
 56 |         return element && element.tagName
 57 |       },
 58 |     },
 59 |     attr: {
 60 |       type: GraphQLString,
 61 |       description:
 62 |         'An attribute of the selected node (eg. `href`, `src`, etc.).',
 63 |       args: {
 64 |         selector,
 65 |         name: {
 66 |           type: new GraphQLNonNull(GraphQLString),
 67 |           description: 'The name of the attribute',
 68 |         },
 69 |       },
 70 |       resolve(element, { selector, name }) {
 71 |         element = selector ? element.querySelector(selector) : element
 72 |         if (element == null) return null
 73 |         const attribute = element.attributes[name]
 74 |         if (attribute == null) return null
 75 |         return attribute.value
 76 |       },
 77 |     },
 78 |     has: {
 79 |       type: GraphQLBoolean,
 80 |       description: 'Returns true if an element with the given selector exists.',
 81 |       args: { selector },
 82 |       resolve(element, { selector }) {
 83 |         return !!element.querySelector(selector)
 84 |       },
 85 |     },
 86 |     query: {
 87 |       type: ElementType,
 88 |       description:
 89 |         'Equivalent to [Element.querySelector](https://developer.mozilla.org/en-US/docs/Web/API/Element/querySelector). The selectors of any nested queries will be scoped to the resulting element.',
 90 |       args: { selector },
 91 |       resolve(element, { selector }) {
 92 |         return element.querySelector(selector)
 93 |       },
 94 |     },
 95 |     queryAll: {
 96 |       type: new GraphQLList(ElementType),
 97 |       description:
 98 |         'Equivalent to [Element.querySelectorAll](https://developer.mozilla.org/en-US/docs/Web/API/Element/querySelectorAll). The selectors of any nested queries will be scoped to the resulting elements.',
 99 |       args: { selector },
100 |       resolve(element, { selector }) {
101 |         return Array.from(element.querySelectorAll(selector))
102 |       },
103 |     },
104 |     children: {
105 |       type: new GraphQLList(ElementType),
106 |       description: "An element's child elements.",
107 |       resolve(element) {
108 |         return Array.from(element.children)
109 |       },
110 |     },
111 |     childNodes: {
112 |       type: new GraphQLList(ElementType),
113 |       description: "An element's child nodes. Includes text nodes.",
114 |       resolve(element) {
115 |         return Array.from(element.childNodes)
116 |       }
117 |     },
118 |     parent: {
119 |       type: ElementType,
120 |       description: "An element's parent element.",
121 |       resolve(element) {
122 |         return element.parentElement
123 |       },
124 |     },
125 |     siblings: {
126 |       type: new GraphQLList(ElementType),
127 |       description:
128 |         "All elements which are at the same level in the tree as the current element, ie. the children of the current element's parent. Includes the current element.",
129 |       resolve(element) {
130 |         const parent = element.parentElement
131 |         if (parent == null) return [element]
132 |         return Array.from(parent.children)
133 |       },
134 |     },
135 |     next: {
136 |       type: ElementType,
137 |       description:
138 |         "The current element's next sibling. Includes text nodes. Equivalent to [Node.nextSibling](https://developer.mozilla.org/en-US/docs/Web/API/Node/nextSibling).",
139 |       resolve(element) {
140 |         return element.nextSibling
141 |       },
142 |     },
143 |     nextAll: {
144 |       type: new GraphQLList(ElementType),
145 |       description: "All of the current element's next siblings",
146 |       resolve(element, { selector }) {
147 |         const siblings = []
148 |         for (
149 |           let next = element.nextSibling;
150 |           next != null;
151 |           next = next.nextSibling
152 |         ) {
153 |           siblings.push(next)
154 |         }
155 |         return siblings
156 |       },
157 |     },
158 |     previous: {
159 |       type: ElementType,
160 |       description:
161 |         "The current element's previous sibling. Includes text nodes. Equivalent to [Node.previousSibling](https://developer.mozilla.org/en-US/docs/Web/API/Node/nextSibling).",
162 |       resolve(element) {
163 |         return element.previousSibling
164 |       },
165 |     },
166 |     previousAll: {
167 |       type: new GraphQLList(ElementType),
168 |       description: "All of the current element's previous siblings",
169 |       resolve(element, { selector }) {
170 |         const siblings = []
171 |         for (
172 |           let previous = element.previousSibling;
173 |           previous != null;
174 |           previous = previous.previousSibling
175 |         ) {
176 |           siblings.push(previous)
177 |         }
178 |         siblings.reverse()
179 |         return siblings
180 |       },
181 |     },
182 |   }
183 | }
184 | 
185 | const NodeType = new GraphQLInterfaceType(<GraphQLInterfaceTypeConfig<
186 |   Element,
187 |   any
188 | >>{
189 |   name: 'Node',
190 |   description: 'A DOM node (either an Element or a Document).',
191 |   fields: sharedFields,
192 | })
193 | 
194 | const DocumentType = new GraphQLObjectType(<GraphQLObjectTypeConfig<
195 |   Element,
196 |   any
197 | >>{
198 |   name: 'Document',
199 |   description: 'A DOM document.',
200 |   interfaces: [NodeType],
201 |   fields: () => ({
202 |     ...sharedFields(),
203 |     title: {
204 |       type: GraphQLString,
205 |       description: 'The page title',
206 |       resolve(element) {
207 |         return element.ownerDocument.title
208 |       },
209 |     },
210 |   }),
211 | })
212 | 
213 | const ElementType = new GraphQLObjectType(<GraphQLObjectTypeConfig<
214 |   Element,
215 |   any
216 | >>{
217 |   name: 'Element',
218 |   description: 'A DOM element.',
219 |   interfaces: [NodeType],
220 |   fields: () => ({
221 |     ...sharedFields(),
222 |     visit: {
223 |       type: DocumentType,
224 |       description:
225 |         'If the element is a link, visit the page linked to in the href attribute.',
226 |       async resolve(element) {
227 |         const href = element.attributes['href']
228 |         if (href == null) {
229 |           return null
230 |         }
231 |         const url = resolve(element.ownerDocument.location.href, href.value) // handle relative links.
232 |         const dom = await JSDOM.fromURL(url)
233 |         return dom.window.document.documentElement
234 |       },
235 |     },
236 |   }),
237 | })
238 | 
239 | const schema = new GraphQLSchema({
240 |   query: new GraphQLObjectType(<GraphQLObjectTypeConfig<{}, {}>>{
241 |     name: 'Query',
242 |     fields: () => ({
243 |       page: {
244 |         type: DocumentType,
245 |         args: {
246 |           url: {
247 |             type: GraphQLString,
248 |             description: 'A URL to fetch the HTML source from.',
249 |           },
250 |           source: {
251 |             type: GraphQLString,
252 |             description:
253 |               'A string containing HTML to be used as the source document.',
254 |           },
255 |         },
256 |         async resolve(_, { url, source }) {
257 |           if (url == null && source == null) {
258 |             throw new Error(
259 |               'You need to provide either a URL or a HTML source string.'
260 |             )
261 |           }
262 |           const dom = url != null ? await JSDOM.fromURL(url) : new JSDOM(source)
263 |           return dom.window.document.documentElement
264 |         },
265 |       },
266 |     }),
267 |   }),
268 | })
269 | 
270 | // Make this importable with ES6
271 | schema['default'] = schema
272 | export = schema
273 | 


--------------------------------------------------------------------------------
/src/types.graphql:
--------------------------------------------------------------------------------
 1 | type Query {
 2 |   page(url: String, html: String): Document
 3 | }
 4 | 
 5 | # A DOM Node
 6 | interface Node {
 7 |   # The HTML representation of the subnodes
 8 |   content(selector: String): String
 9 |   # The HTML representation of the selected DOM node
10 |   html(selector: String): String
11 |   # The text content of the selected DOM node
12 |   text(selector: String): String
13 |   # The tag name of the selected DOM node
14 |   tag(selector: String): String
15 |   # The attribute with the given name of the selected DOM node
16 |   attr(selector: String, name: String!): String
17 |   # Returns true if the DOM matches the selector
18 |   has(selector: String!): Boolean
19 | 
20 |   query(selector: String!): [Element]
21 |   children: [Element]
22 |   parent: Element
23 |   siblings: [Element]
24 |   # The immediately following sibling
25 |   next(selector: String): Element
26 |   # All following siblings
27 |   nextAll(selector: String): [Element]
28 |   # The immediately previous sibling
29 |   previous(selector: String): Element
30 |   # All previous siblings
31 |   previousAll(selector: String): [Element]
32 | }
33 | 
34 | type Document implements Node {
35 |   title: String
36 | }
37 | 
38 | type Element implements Node {
39 |   # If the element is a link, visit the page linked to in the href attribute.
40 |   visit: Document
41 | }


--------------------------------------------------------------------------------
/tsconfig.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "compilerOptions": {
 3 |     "allowSyntheticDefaultImports": true,
 4 |     "declaration": true,
 5 |     "module": "commonjs",
 6 |     "moduleResolution": "node",
 7 |     "noImplicitAny": true,
 8 |     "noUnusedLocals": true,
 9 |     "outDir": "./build",
10 |     "preserveConstEnums": true,
11 |     "removeComments": false,
12 |     "sourceMap": true,
13 |     "strictNullChecks": true,
14 |     "suppressImplicitAnyIndexErrors": true,
15 |     "target": "es2015"
16 |   },
17 |   "include": ["src/**/*"],
18 |   "exclude": ["node_modules"]
19 | }
20 | 


--------------------------------------------------------------------------------