/
plugins.ts
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/
plugins.ts
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/**
* This file handles all logic for converting string-based configuration references into loaded objects.
*/
import buildDebug from "debug";
import path from "path";
import gensync, { type Handler } from "gensync";
import { isAsync } from "../../gensync-utils/async";
import loadCjsOrMjsDefault, { supportsESM } from "./module-types";
import { fileURLToPath, pathToFileURL } from "url";
import importMetaResolve from "./import-meta-resolve";
import { createRequire } from "module";
const require = createRequire(import.meta.url);
const debug = buildDebug("babel:config:loading:files:plugins");
const EXACT_RE = /^module:/;
const BABEL_PLUGIN_PREFIX_RE = /^(?!@|module:|[^/]+\/|babel-plugin-)/;
const BABEL_PRESET_PREFIX_RE = /^(?!@|module:|[^/]+\/|babel-preset-)/;
const BABEL_PLUGIN_ORG_RE = /^(@babel\/)(?!plugin-|[^/]+\/)/;
const BABEL_PRESET_ORG_RE = /^(@babel\/)(?!preset-|[^/]+\/)/;
const OTHER_PLUGIN_ORG_RE =
/^(@(?!babel\/)[^/]+\/)(?![^/]*babel-plugin(?:-|\/|$)|[^/]+\/)/;
const OTHER_PRESET_ORG_RE =
/^(@(?!babel\/)[^/]+\/)(?![^/]*babel-preset(?:-|\/|$)|[^/]+\/)/;
const OTHER_ORG_DEFAULT_RE = /^(@(?!babel$)[^/]+)$/;
export function* resolvePlugin(name: string, dirname: string): Handler<string> {
// eslint-disable-next-line @typescript-eslint/no-use-before-define
return yield* resolveStandardizedName("plugin", name, dirname);
}
export function* resolvePreset(name: string, dirname: string): Handler<string> {
// eslint-disable-next-line @typescript-eslint/no-use-before-define
return yield* resolveStandardizedName("preset", name, dirname);
}
export function* loadPlugin(
name: string,
dirname: string,
): Handler<{ filepath: string; value: unknown }> {
const filepath = yield* resolvePlugin(name, dirname);
const value = yield* requireModule("plugin", filepath);
debug("Loaded plugin %o from %o.", name, dirname);
return { filepath, value };
}
export function* loadPreset(
name: string,
dirname: string,
): Handler<{ filepath: string; value: unknown }> {
const filepath = yield* resolvePreset(name, dirname);
const value = yield* requireModule("preset", filepath);
debug("Loaded preset %o from %o.", name, dirname);
return { filepath, value };
}
function standardizeName(type: "plugin" | "preset", name: string) {
// Let absolute and relative paths through.
if (path.isAbsolute(name)) return name;
const isPreset = type === "preset";
return (
name
// foo -> babel-preset-foo
.replace(
isPreset ? BABEL_PRESET_PREFIX_RE : BABEL_PLUGIN_PREFIX_RE,
`babel-${type}-`,
)
// @babel/es2015 -> @babel/preset-es2015
.replace(
isPreset ? BABEL_PRESET_ORG_RE : BABEL_PLUGIN_ORG_RE,
`$1${type}-`,
)
// @foo/mypreset -> @foo/babel-preset-mypreset
.replace(
isPreset ? OTHER_PRESET_ORG_RE : OTHER_PLUGIN_ORG_RE,
`$1babel-${type}-`,
)
// @foo -> @foo/babel-preset
.replace(OTHER_ORG_DEFAULT_RE, `$1/babel-${type}`)
// module:mypreset -> mypreset
.replace(EXACT_RE, "")
);
}
type Result<T> = { error: Error; value: null } | { error: null; value: T };
function* resolveAlternativesHelper(
type: "plugin" | "preset",
name: string,
): Iterator<string, string, Result<string>> {
const standardizedName = standardizeName(type, name);
const { error, value } = yield standardizedName;
if (!error) return value;
// @ts-expect-error code may not index error
if (error.code !== "MODULE_NOT_FOUND") throw error;
if (standardizedName !== name && !(yield name).error) {
error.message += `\n- If you want to resolve "${name}", use "module:${name}"`;
}
if (!(yield standardizeName(type, "@babel/" + name)).error) {
error.message += `\n- Did you mean "@babel/${name}"?`;
}
const oppositeType = type === "preset" ? "plugin" : "preset";
if (!(yield standardizeName(oppositeType, name)).error) {
error.message += `\n- Did you accidentally pass a ${oppositeType} as a ${type}?`;
}
throw error;
}
function tryRequireResolve(
id: Parameters<RequireResolve>[0],
{ paths: [dirname] }: Parameters<RequireResolve>[1],
): Result<string> {
try {
return { error: null, value: require.resolve(id, { paths: [dirname] }) };
} catch (error) {
return { error, value: null };
}
}
async function tryImportMetaResolve(
id: Parameters<ImportMeta["resolve"]>[0],
options: Parameters<ImportMeta["resolve"]>[1],
): Promise<Result<string>> {
try {
return { error: null, value: await importMetaResolve(id, options) };
} catch (error) {
return { error, value: null };
}
}
function resolveStandardizedNameForRequire(
type: "plugin" | "preset",
name: string,
dirname: string,
) {
const it = resolveAlternativesHelper(type, name);
let res = it.next();
while (!res.done) {
res = it.next(tryRequireResolve(res.value, { paths: [dirname] }));
}
return res.value;
}
async function resolveStandardizedNameForImport(
type: "plugin" | "preset",
name: string,
dirname: string,
) {
const parentUrl = pathToFileURL(
path.join(dirname, "./babel-virtual-resolve-base.js"),
).href;
const it = resolveAlternativesHelper(type, name);
let res = it.next();
while (!res.done) {
res = it.next(await tryImportMetaResolve(res.value, parentUrl));
}
return fileURLToPath(res.value);
}
const resolveStandardizedName = gensync<
[type: "plugin" | "preset", name: string, dirname?: string],
string
>({
sync(type, name, dirname = process.cwd()) {
return resolveStandardizedNameForRequire(type, name, dirname);
},
async async(type, name, dirname = process.cwd()) {
if (!supportsESM) {
return resolveStandardizedNameForRequire(type, name, dirname);
}
try {
return await resolveStandardizedNameForImport(type, name, dirname);
} catch (e) {
try {
return resolveStandardizedNameForRequire(type, name, dirname);
} catch (e2) {
if (e.type === "MODULE_NOT_FOUND") throw e;
if (e2.type === "MODULE_NOT_FOUND") throw e2;
throw e;
}
}
},
});
if (!process.env.BABEL_8_BREAKING) {
// eslint-disable-next-line no-var
var LOADING_MODULES = new Set();
}
function* requireModule(type: string, name: string): Handler<unknown> {
if (!process.env.BABEL_8_BREAKING) {
if (!(yield* isAsync()) && LOADING_MODULES.has(name)) {
throw new Error(
`Reentrant ${type} detected trying to load "${name}". This module is not ignored ` +
"and is trying to load itself while compiling itself, leading to a dependency cycle. " +
'We recommend adding it to your "ignore" list in your babelrc, or to a .babelignore.',
);
}
}
try {
if (!process.env.BABEL_8_BREAKING) {
LOADING_MODULES.add(name);
}
return yield* loadCjsOrMjsDefault(
name,
`You appear to be using a native ECMAScript module ${type}, ` +
"which is only supported when running Babel asynchronously.",
// For backward compatibility, we need to support malformed presets
// defined as separate named exports rather than a single default
// export.
// See packages/babel-core/test/fixtures/option-manager/presets/es2015_named.js
true,
);
} catch (err) {
err.message = `[BABEL]: ${err.message} (While processing: ${name})`;
throw err;
} finally {
if (!process.env.BABEL_8_BREAKING) {
LOADING_MODULES.delete(name);
}
}
}