feat(resolve): support "fallback array" in package exports field #10504
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -2,7 +2,7 @@ import fs from 'node:fs' | |
| import path from 'node:path' | ||
| import colors from 'picocolors' | ||
| import type { PartialResolvedId } from 'rollup' | ||
| import { resolveExports } from 'resolve.exports' | ||
| import { hasESMSyntax } from 'mlly' | ||
| import type { Plugin } from '../plugin' | ||
| import { | ||
|
|
@@ -923,29 +923,28 @@ export function resolvePackageEntry( | |
| return cached | ||
| } | ||
| try { | ||
| let entryPoints: string[] = [] | ||
|
|
||
| // the exports field takes highest priority as described in | ||
| // https://nodejs.org/api/packages.html#package-entry-points | ||
| if (data.exports) { | ||
|
There was a problem hiding this comment. No need for |
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| entryPoints = resolveExports( | ||
| data, | ||
| '.', | ||
| options, | ||
| getInlineConditions(options.conditions, targetWeb) | ||
|
There was a problem hiding this comment. Conditions that can't be inferred from Vite's resolve options are generated with |
||
| ) | ||
| if (!entryPoints.length) { | ||
| packageEntryFailure(id) | ||
|
There was a problem hiding this comment. This comes from #8484, and it makes resolution more strict when an |
||
| } | ||
| } else if (targetWeb && options.browserField) { | ||
| // check browser field | ||
| // https://github.com/defunctzombie/package-browser-field-spec | ||
| const browserEntry = | ||
| typeof data.browser === 'string' | ||
| ? data.browser | ||
| : isObject(data.browser) && data.browser['.'] | ||
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|
||
| if (browserEntry) { | ||
| // check if the package also has a "module" field. | ||
| if ( | ||
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@@ -968,34 +967,34 @@ export function resolvePackageEntry( | |
| const content = fs.readFileSync(resolvedBrowserEntry, 'utf-8') | ||
| if (hasESMSyntax(content)) { | ||
| // likely ESM, prefer browser | ||
| entryPoints[0] = browserEntry | ||
| } else { | ||
| // non-ESM, UMD or IIFE or CJS(!!! e.g. firebase 7.x), prefer module | ||
| entryPoints[0] = data.module | ||
| } | ||
| } | ||
| } else { | ||
| entryPoints[0] = browserEntry | ||
| } | ||
| } | ||
| } | ||
|
|
||
| if (!entryPoints[0]) { | ||
| for (const field of options.mainFields) { | ||
| if (field === 'browser') continue // already checked above | ||
| if (typeof data[field] === 'string') { | ||
| entryPoints[0] = data[field] | ||
| break | ||
| } | ||
| } | ||
| entryPoints[0] ||= data.main | ||
| } | ||
|
|
||
| // try default entry when entry is not define | ||
| // https://nodejs.org/api/modules.html#all-together | ||
| if (!entryPoints[0]) { | ||
| entryPoints = ['index.js', 'index.json', 'index.node'] | ||
| } | ||
|
|
||
| for (let entry of entryPoints) { | ||
| // make sure we don't get scripts when looking for sass | ||
|
|
@@ -1040,52 +1039,8 @@ function packageEntryFailure(id: string, details?: string) { | |
| ) | ||
| } | ||
|
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||
| function getInlineConditions(conditions: string[], targetWeb: boolean) { | ||
| return targetWeb && !conditions.includes('node') ? ['browser'] : ['node'] | ||
| } | ||
|
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||
| function resolveDeepImport( | ||
|
|
@@ -1098,56 +1053,55 @@ function resolveDeepImport( | |
| data | ||
| }: PackageData, | ||
| targetWeb: boolean, | ||
| options: InternalResolveOptionsWithOverrideConditions | ||
| ): string | undefined { | ||
| const cache = getResolvedCache(id, targetWeb) | ||
| if (cache) { | ||
| return cache | ||
| } | ||
|
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||
| const { exports: exportsField, browser: browserField } = data | ||
| const { file, postfix } = splitFileAndPostfix(id) | ||
|
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||
| let possibleFiles: string[] | undefined | ||
| if (exportsField) { | ||
| // map relative based on exports data | ||
| possibleFiles = resolveExports( | ||
| data, | ||
| file, | ||
| options, | ||
| getInlineConditions(options.conditions, targetWeb), | ||
| options.overrideConditions | ||
| ) | ||
| if (!possibleFiles.length) { | ||
| throw new Error( | ||
| `Package subpath '${file}' is not defined by "exports" in ` + | ||
| `${path.join(dir, 'package.json')}.` | ||
| ) | ||
| } | ||
| } else if (targetWeb && options.browserField && isObject(browserField)) { | ||
| const mapped = mapWithBrowserField(file, browserField) | ||
| if (mapped) { | ||
| possibleFiles = [mapped] | ||
| } else if (mapped === false) { | ||
| return (webResolvedImports[id] = browserExternalId) | ||
| } | ||
| } | ||
|
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||
| possibleFiles ||= [id] | ||
| if (possibleFiles[0]) { | ||
| let resolved: string | undefined | ||
| possibleFiles.some( | ||
| (file) => | ||
| (resolved = tryFsResolve( | ||
| path.join(dir, file), | ||
| options, | ||
| !exportsField, // try index only if no exports field | ||
| targetWeb | ||
| )) | ||
| ) | ||
| if (resolved) { | ||
| resolved += postfix | ||
| isDebug && | ||
| debug( | ||
| `[node/deep-import] ${colors.cyan(id)} -> ${colors.dim(resolved)}` | ||
|
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||
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The new
resolveExportsreturns an array of possible module paths. It prefers to return an empty array, rather than throw an error. Vite should only throw if none of the paths in the array are found.