forked from import-js/eslint-plugin-import
-
Notifications
You must be signed in to change notification settings - Fork 4
/
namespace.js
298 lines (261 loc) · 9.63 KB
/
namespace.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
import { test, SYNTAX_CASES, getTSParsers } from '../utils'
import { RuleTester } from 'eslint'
import flatMap from 'array.prototype.flatmap'
var ruleTester = new RuleTester({ env: { es6: true }})
, rule = require('rules/namespace')
function error(name, namespace) {
return { message: `'${name}' not found in imported namespace '${namespace}'.` }
}
const valid = [
test({ code: 'import "./malformed.js"' }),
test({ code: "import * as foo from './empty-folder';"}),
test({ code: 'import * as names from "./named-exports"; ' +
'console.log((names.b).c); ' }),
test({ code: 'import * as names from "./named-exports"; ' +
'console.log(names.a);' }),
test({ code: 'import * as names from "./re-export-names"; ' +
'console.log(names.foo);' }),
test({
code: "import * as elements from './jsx';",
parserOptions: {
sourceType: 'module',
ecmaFeatures: { jsx: true },
ecmaVersion: 2015,
},
}),
test({ code: "import * as foo from './common';" }),
// destructuring namespaces
test({ code: 'import * as names from "./named-exports";' +
'const { a } = names' }),
test({ code: 'import * as names from "./named-exports";' +
'const { d: c } = names' }),
test({ code: 'import * as names from "./named-exports";' +
'const { c } = foo\n' +
' , { length } = "names"\n' +
' , alt = names' }),
// deep destructuring only cares about top level
test({ code: 'import * as names from "./named-exports";' +
'const { ExportedClass: { length } } = names' }),
// detect scope redefinition
test({ code: 'import * as names from "./named-exports";' +
'function b(names) { const { c } = names }' }),
test({ code: 'import * as names from "./named-exports";' +
'function b() { let names = null; const { c } = names }' }),
test({ code: 'import * as names from "./named-exports";' +
'const x = function names() { const { c } = names }' }),
/////////
// es7 //
/////////
test({ code: 'export * as names from "./named-exports"'
, parser: require.resolve('babel-eslint') }),
test({ code: 'export defport, * as names from "./named-exports"'
, parser: require.resolve('babel-eslint') }),
// non-existent is handled by no-unresolved
test({ code: 'export * as names from "./does-not-exist"'
, parser: require.resolve('babel-eslint') }),
test({
code: 'import * as Endpoints from "./issue-195/Endpoints"; console.log(Endpoints.Users)',
parser: require.resolve('babel-eslint'),
}),
// respect hoisting
test({
code:
'function x() { console.log((names.b).c); } ' +
'import * as names from "./named-exports"; ',
}),
// names.default is valid export
test({ code: "import * as names from './default-export';" }),
test({ code: "import * as names from './default-export'; console.log(names.default)" }),
test({
code: 'export * as names from "./default-export"',
parser: require.resolve('babel-eslint'),
}),
test({
code: 'export defport, * as names from "./default-export"',
parser: require.resolve('babel-eslint'),
}),
// #456: optionally ignore computed references
test({
code: `import * as names from './named-exports'; console.log(names['a']);`,
options: [{ allowComputed: true }],
}),
// #656: should handle object-rest properties
test({
code: `import * as names from './named-exports'; const {a, b, ...rest} = names;`,
parserOptions: {
ecmaVersion: 2018,
},
}),
test({
code: `import * as names from './named-exports'; const {a, b, ...rest} = names;`,
parser: require.resolve('babel-eslint'),
}),
// #1144: should handle re-export CommonJS as namespace
test({
code: `import * as ns from './re-export-common'; const {foo} = ns;`,
}),
// JSX
test({
code: 'import * as Names from "./named-exports"; const Foo = <Names.a/>',
parserOptions: {
ecmaFeatures: {
jsx: true,
},
},
}),
// Typescript
...flatMap(getTSParsers(), (parser) => [
test({
code: `
import * as foo from "./typescript-declare-nested"
foo.bar.MyFunction()
`,
parser: parser,
settings: {
'import/parsers': { [parser]: ['.ts'] },
'import/resolver': { 'eslint-import-resolver-typescript': true },
},
}),
test({
code: `import { foobar } from "./typescript-declare-interface"`,
parser: parser,
settings: {
'import/parsers': { [parser]: ['.ts'] },
'import/resolver': { 'eslint-import-resolver-typescript': true },
},
}),
test({
code: 'export * from "typescript/lib/typescript.d"',
parser: parser,
settings: {
'import/parsers': { [parser]: ['.ts'] },
'import/resolver': { 'eslint-import-resolver-typescript': true },
},
}),
]),
...SYNTAX_CASES,
]
const invalid = [
test({ code: "import * as names from './named-exports'; " +
' console.log(names.c);'
, errors: [error('c', 'names')] }),
test({ code: "import * as names from './named-exports';" +
" console.log(names['a']);"
, errors: ["Unable to validate computed reference to imported namespace 'names'."] }),
// assignment warning (from no-reassign)
test({ code: 'import * as foo from \'./bar\'; foo.foo = \'y\';'
, errors: [{ message: 'Assignment to member of namespace \'foo\'.'}] }),
test({ code: 'import * as foo from \'./bar\'; foo.x = \'y\';'
, errors: ['Assignment to member of namespace \'foo\'.', "'x' not found in imported namespace 'foo'."] }),
// invalid destructuring
test({
code: 'import * as names from "./named-exports"; const { c } = names',
errors: [{ type: 'Property', message: "'c' not found in imported namespace 'names'." }],
}),
test({
code: 'import * as names from "./named-exports"; function b() { const { c } = names }',
errors: [{ type: 'Property', message: "'c' not found in imported namespace 'names'." }],
}),
test({
code: 'import * as names from "./named-exports"; const { c: d } = names',
errors: [{ type: 'Property', message: "'c' not found in imported namespace 'names'." }],
}),
test({
code: 'import * as names from "./named-exports";' +
'const { c: { d } } = names',
errors: [{ type: 'Property', message: "'c' not found in imported namespace 'names'." }],
}),
/////////
// es7 //
/////////
test({
code: 'import * as Endpoints from "./issue-195/Endpoints"; console.log(Endpoints.Foo)',
parser: require.resolve('babel-eslint'),
errors: ["'Foo' not found in imported namespace 'Endpoints'."],
}),
// parse errors
test({
code: "import * as namespace from './malformed.js';",
errors: [{
message: "Parse errors in imported module './malformed.js': 'return' outside of function (1:1)",
type: 'Literal',
}],
}),
test({
code: "import b from './deep/default'; console.log(b.e)",
errors: [ "'e' not found in imported namespace 'b'." ],
}),
// respect hoisting
test({
code:
'console.log(names.c);' +
"import * as names from './named-exports'; ",
errors: [error('c', 'names')],
}),
test({
code:
'function x() { console.log(names.c) } ' +
"import * as names from './named-exports'; ",
errors: [error('c', 'names')],
}),
// #328: * exports do not include default
test({
code: 'import * as ree from "./re-export"; console.log(ree.default)',
errors: [`'default' not found in imported namespace 'ree'.`],
}),
// JSX
test({
code: 'import * as Names from "./named-exports"; const Foo = <Names.e/>',
errors: [error('e', 'Names')],
parserOptions: {
ecmaFeatures: {
jsx: true,
},
},
}),
]
///////////////////////
// deep dereferences //
//////////////////////
;[['deep', require.resolve('espree')], ['deep-es7', require.resolve('babel-eslint')]].forEach(function ([folder, parser]) { // close over params
valid.push(
test({ parser, code: `import * as a from "./${folder}/a"; console.log(a.b.c.d.e)` }),
test({ parser, code: `import { b } from "./${folder}/a"; console.log(b.c.d.e)` }),
test({ parser, code: `import * as a from "./${folder}/a"; console.log(a.b.c.d.e.f)` }),
test({ parser, code: `import * as a from "./${folder}/a"; var {b:{c:{d:{e}}}} = a` }),
test({ parser, code: `import { b } from "./${folder}/a"; var {c:{d:{e}}} = b` }))
// deep namespaces should include explicitly exported defaults
test({ parser, code: `import * as a from "./${folder}/a"; console.log(a.b.default)` }),
invalid.push(
test({
parser,
code: `import * as a from "./${folder}/a"; console.log(a.b.e)`,
errors: [ "'e' not found in deeply imported namespace 'a.b'." ],
}),
test({
parser,
code: `import { b } from "./${folder}/a"; console.log(b.e)`,
errors: [ "'e' not found in imported namespace 'b'." ],
}),
test({
parser,
code: `import * as a from "./${folder}/a"; console.log(a.b.c.e)`,
errors: [ "'e' not found in deeply imported namespace 'a.b.c'." ],
}),
test({
parser,
code: `import { b } from "./${folder}/a"; console.log(b.c.e)`,
errors: [ "'e' not found in deeply imported namespace 'b.c'." ],
}),
test({
parser,
code: `import * as a from "./${folder}/a"; var {b:{ e }} = a`,
errors: [ "'e' not found in deeply imported namespace 'a.b'." ],
}),
test({
parser,
code: `import * as a from "./${folder}/a"; var {b:{c:{ e }}} = a`,
errors: [ "'e' not found in deeply imported namespace 'a.b.c'." ],
}))
})
ruleTester.run('namespace', rule, { valid, invalid })