/
ctx.ts
186 lines (161 loc) · 5.33 KB
/
ctx.ts
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import { dirname, isAbsolute, relative, resolve } from 'path'
import { promises as fs } from 'fs'
import { slash, throttle, toArray } from '@antfu/utils'
import { createFilter } from '@rollup/pluginutils'
import { isPackageExists } from 'local-pkg'
import type { Import } from 'unimport'
// @ts-expect-error types
import { vueTemplateAddon } from 'unimport/addons'
import { createUnimport, scanDirExports } from 'unimport'
import MagicString from 'magic-string'
import { presets } from '../presets'
import type { ESLintrc, ImportExtended, Options } from '../types'
import { generateESLintConfigs } from './eslintrc'
import { resolversAddon } from './resolvers'
export function createContext(options: Options = {}, root = process.cwd()) {
const imports = flattenImports(options.imports, options.presetOverriding)
options.ignore?.forEach((name) => {
const i = imports.find(i => i.as === name)
if (i)
i.disabled = true
})
const {
dts: preferDTS = isPackageExists('typescript'),
} = options
const dirs = options.dirs?.map(dir => resolve(root, dir))
const eslintrc: ESLintrc = options.eslintrc || {}
eslintrc.enabled = eslintrc.enabled === undefined ? false : eslintrc.enabled
eslintrc.filepath = eslintrc.filepath || './.eslintrc-auto-import.json'
eslintrc.globalsPropValue = eslintrc.globalsPropValue === undefined ? true : eslintrc.globalsPropValue
const resolvers = options.resolvers ? [options.resolvers].flat(2) : []
const unimport = createUnimport({
imports: imports as Import[],
presets: [],
addons: [
...(options.vueTemplate ? [vueTemplateAddon()] : []),
resolversAddon(resolvers),
{
decleration(dts) {
return `// Generated by 'unplugin-auto-import'\n${dts}`
},
},
],
})
const filter = createFilter(
options.include || [/\.[jt]sx?$/, /\.vue$/, /\.vue\?vue/, /\.svelte$/],
options.exclude || [/[\\/]node_modules[\\/]/, /[\\/]\.git[\\/]/],
)
const dts = preferDTS === false
? false
: preferDTS === true
? resolve(root, 'auto-imports.d.ts')
: resolve(root, preferDTS)
function generateDTS(file: string) {
const dir = dirname(file)
return unimport.generateTypeDecarations({
resolvePath: (i) => {
if (i.from.startsWith('.') || isAbsolute(i.from)) {
const related = slash(relative(dir, i.from).replace(/\.ts$/, ''))
return !related.startsWith('.')
? `./${related}`
: related
}
return i.from
},
})
}
function generateESLint() {
return generateESLintConfigs(unimport.getImports(), eslintrc)
}
const writeConfigFilesThrottled = throttle(500, false, writeConfigFiles)
let lastDTS: string | undefined
let lastESLint: string | undefined
function writeConfigFiles() {
const promises: any[] = []
if (dts) {
const content = generateDTS(dts)
if (content !== lastDTS) {
lastDTS = content
promises.push(fs.writeFile(dts, generateDTS(dts), 'utf-8'))
}
}
if (eslintrc.enabled && eslintrc.filepath) {
const content = generateESLint()
if (content !== lastESLint) {
lastESLint = content
promises.push(fs.writeFile(eslintrc.filepath, content, 'utf-8'))
}
}
return Promise.all(promises)
}
async function scanDirs() {
if (dirs?.length) {
await unimport.modifyDynamicImports(async (imports) => {
const exports = await scanDirExports(dirs) as ImportExtended[]
exports.forEach(i => i.__source = 'dir')
return [
...imports.filter((i: ImportExtended) => i.__source !== 'dir'),
...exports,
] as Import[]
})
}
writeConfigFilesThrottled()
}
async function transform(code: string, id: string) {
const s = new MagicString(code)
await unimport.injectImports(s, id)
if (!s.hasChanged())
return
writeConfigFilesThrottled()
return {
code: s.toString(),
map: s.generateMap(),
}
}
if (!imports.length && !resolvers.length)
console.warn('[auto-import] plugin installed but no imports has defined, see https://github.com/antfu/unplugin-auto-import#configurations for configurations')
return {
root,
dirs,
filter,
scanDirs,
writeConfigFiles,
writeConfigFilesThrottled,
transform,
generateDTS,
generateESLint,
}
}
export function flattenImports(map: Options['imports'], overriding = false): Import[] {
const flat: Record<string, Import> = {}
toArray(map).forEach((definition) => {
if (typeof definition === 'string') {
if (!presets[definition])
throw new Error(`[auto-import] preset ${definition} not found`)
const preset = presets[definition]
definition = typeof preset === 'function' ? preset() : preset
}
for (const mod of Object.keys(definition)) {
for (const id of definition[mod]) {
const meta = {
from: mod,
} as Import
let name: string
if (Array.isArray(id)) {
name = id[1]
meta.name = id[0]
meta.as = id[1]
}
else {
name = id
meta.name = id
meta.as = id
}
if (flat[name] && !overriding)
throw new Error(`[auto-import] identifier ${name} already defined with ${flat[name].from}`)
flat[name] = meta
}
}
})
return Object.values(flat)
}