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resolvers.ts
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/
resolvers.ts
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import { toArray } from '@antfu/utils'
import type { Addon, Import } from 'unimport'
import type { ImportExtended, ImportLegacy, Resolver, ResolverResult } from '../types'
export function normalizeImport(info: Import | ResolverResult | ImportExtended | ImportLegacy | string, name: string): ImportExtended {
if (typeof info === 'string') {
return {
name: 'default',
as: name,
from: info,
}
}
if ('path' in info) {
return {
from: info.path,
as: info.name,
name: info.importName!,
sideEffects: info.sideEffects,
}
}
return {
name,
as: name,
...info,
}
}
export async function firstMatchedResolver(resolvers: Resolver[], fullname: string) {
let name = fullname
for (const resolver of resolvers) {
if (typeof resolver === 'object' && resolver.type === 'directive') {
if (name.startsWith('v'))
name = name.slice(1)
else
continue
}
const resolved = await (typeof resolver === 'function' ? resolver(name) : resolver.resolve(name))
if (resolved)
return normalizeImport(resolved, fullname)
}
}
export function resolversAddon(resolvers: Resolver[]): Addon {
return {
async matchImports(names, matched) {
if (!resolvers.length)
return
const dynamic: ImportExtended[] = []
const sideEffects: ImportExtended[] = []
await Promise.all([...names].map(async (name) => {
const matchedImport = matched.find(i => i.as === name)
if (matchedImport) {
if ('sideEffects' in matchedImport)
sideEffects.push(...toArray((matchedImport as ImportExtended).sideEffects).map(i => normalizeImport(i, '')))
return
}
const resolved = await firstMatchedResolver(resolvers, name)
if (resolved)
dynamic.push(resolved)
if (resolved?.sideEffects)
sideEffects.push(...toArray(resolved?.sideEffects).map(i => normalizeImport(i, '')))
}))
if (dynamic.length) {
this.dynamicImports.push(...dynamic)
this.invalidate()
}
if (dynamic.length || sideEffects.length)
return [...matched, ...dynamic, ...sideEffects]
},
}
}