/
importGlob.ts
260 lines (242 loc) · 6.63 KB
/
importGlob.ts
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
import path from 'path'
import { promises as fsp } from 'fs'
import glob from 'fast-glob'
import JSON5 from 'json5'
import type { RollupError } from 'rollup'
import colors from 'picocolors'
import {
isModernFlag,
preloadMarker,
preloadMethod
} from './plugins/importAnalysisBuild'
import {
blankReplacer,
cleanUrl,
multilineCommentsRE,
normalizePath,
singlelineCommentsRE
} from './utils'
import type { Logger } from '.'
interface GlobParams {
base: string
pattern: string
parentDepth: number
isAbsolute: boolean
}
interface GlobOptions {
as?: string
/**
* @deprecated
*/
assert?: {
type: string
}
}
function formatGlobRelativePattern(base: string, pattern: string): GlobParams {
let parentDepth = 0
while (pattern.startsWith('../')) {
pattern = pattern.slice(3)
base = path.resolve(base, '../')
parentDepth++
}
if (pattern.startsWith('./')) {
pattern = pattern.slice(2)
}
return { base, pattern, parentDepth, isAbsolute: false }
}
export async function transformImportGlob(
source: string,
pos: number,
importer: string,
importIndex: number,
root: string,
logger: Logger,
normalizeUrl?: (url: string, pos: number) => Promise<[string, string]>,
resolve?: (url: string, importer?: string) => Promise<string | undefined>,
preload = true
): Promise<{
importsString: string
imports: string[]
exp: string
endIndex: number
isEager: boolean
pattern: string
base: string
}> {
const isEager = source.slice(pos, pos + 21) === 'import.meta.globEager'
const isEagerDefault =
isEager && source.slice(pos + 21, pos + 28) === 'Default'
const err = (msg: string) => {
const e = new Error(`Invalid glob import syntax: ${msg}`)
;(e as any).pos = pos
return e
}
importer = cleanUrl(importer)
const importerBasename = path.basename(importer)
const [userPattern, options, endIndex] = lexGlobPattern(source, pos)
let globParams: GlobParams | null = null
if (userPattern.startsWith('/')) {
globParams = {
isAbsolute: true,
base: path.resolve(root),
pattern: userPattern.slice(1),
parentDepth: 0
}
} else if (userPattern.startsWith('.')) {
globParams = formatGlobRelativePattern(path.dirname(importer), userPattern)
} else if (resolve) {
const resolvedId = await resolve(userPattern, importer)
if (resolvedId) {
const importerDirname = path.dirname(importer)
globParams = formatGlobRelativePattern(
importerDirname,
normalizePath(path.relative(importerDirname, resolvedId))
)
}
}
if (!globParams) {
throw err(
`pattern must start with "." or "/" (relative to project root) or alias path`
)
}
const { base, parentDepth, isAbsolute, pattern } = globParams
const files = glob.sync(pattern, {
cwd: base,
// Ignore node_modules by default unless explicitly indicated in the pattern
ignore: /(^|\/)node_modules\//.test(pattern) ? [] : ['**/node_modules/**']
})
const imports: string[] = []
let importsString = ``
let entries = ``
for (let i = 0; i < files.length; i++) {
// skip importer itself
if (files[i] === importerBasename) continue
const file = isAbsolute
? `/${files[i]}`
: parentDepth
? `${'../'.repeat(parentDepth)}${files[i]}`
: `./${files[i]}`
let importee = file
if (normalizeUrl) {
;[importee] = await normalizeUrl(file, pos)
}
imports.push(importee)
// TODO remove assert syntax for the Vite 3.0 release.
const isRawAssert = options?.assert?.type === 'raw'
const isRawType = options?.as === 'raw'
if (isRawType || isRawAssert) {
if (isRawAssert) {
logger.warn(
colors.yellow(
colors.bold(
"(!) import.meta.glob('...', { assert: { type: 'raw' }}) is deprecated. Use import.meta.glob('...', { as: 'raw' }) instead."
)
)
)
}
entries += ` ${JSON.stringify(file)}: ${JSON.stringify(
await fsp.readFile(path.join(base, files[i]), 'utf-8')
)},`
} else {
if (isEager) {
const identifier = `__glob_${importIndex}_${i}`
importsString += `import ${
isEagerDefault ? `` : `* as `
}${identifier} from ${JSON.stringify(importee)};`
entries += ` ${JSON.stringify(file)}: ${identifier},`
} else {
let imp = `import(${JSON.stringify(importee)})`
if (!normalizeUrl && preload) {
imp =
`(${isModernFlag}` +
`? ${preloadMethod}(()=>${imp},"${preloadMarker}")` +
`: ${imp})`
}
entries += ` ${JSON.stringify(file)}: () => ${imp},`
}
}
}
return {
imports,
importsString,
exp: `{${entries}}`,
endIndex,
isEager,
pattern,
base
}
}
const enum LexerState {
inCall,
inSingleQuoteString,
inDoubleQuoteString,
inTemplateString
}
function lexGlobPattern(
code: string,
pos: number
): [string, GlobOptions, number] {
let state = LexerState.inCall
let pattern = ''
let i = code.indexOf(`(`, pos) + 1
outer: for (; i < code.length; i++) {
const char = code.charAt(i)
switch (state) {
case LexerState.inCall:
if (char === `'`) {
state = LexerState.inSingleQuoteString
} else if (char === `"`) {
state = LexerState.inDoubleQuoteString
} else if (char === '`') {
state = LexerState.inTemplateString
} else if (/\s/.test(char)) {
continue
} else {
error(i)
}
break
case LexerState.inSingleQuoteString:
if (char === `'`) {
break outer
} else {
pattern += char
}
break
case LexerState.inDoubleQuoteString:
if (char === `"`) {
break outer
} else {
pattern += char
}
break
case LexerState.inTemplateString:
if (char === '`') {
break outer
} else {
pattern += char
}
break
default:
throw new Error('unknown import.meta.glob lexer state')
}
}
const noCommentCode = code
.slice(i + 1)
.replace(singlelineCommentsRE, blankReplacer)
.replace(multilineCommentsRE, blankReplacer)
const endIndex = noCommentCode.indexOf(')')
const optionString = noCommentCode.substring(0, endIndex)
const commaIndex = optionString.indexOf(',')
let options = {}
if (commaIndex > -1) {
options = JSON5.parse(optionString.substring(commaIndex + 1))
}
return [pattern, options, endIndex + i + 2]
}
function error(pos: number) {
const err = new Error(
`import.meta.glob() can only accept string literals.`
) as RollupError
err.pos = pos
throw err
}