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index.js
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index.js
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const path = require("path");
const { validate } = require("schema-utils");
const serialize = require("serialize-javascript");
const normalizePath = require("normalize-path");
const globParent = require("glob-parent");
const fastGlob = require("fast-glob");
// @ts-ignore
const { version } = require("../package.json");
const schema = require("./options.json");
const { readFile, stat, throttleAll } = require("./utils");
const template = /\[\\*([\w:]+)\\*\]/i;
/** @typedef {import("schema-utils/declarations/validate").Schema} Schema */
/** @typedef {import("webpack").Compiler} Compiler */
/** @typedef {import("webpack").Compilation} Compilation */
/** @typedef {import("webpack").WebpackError} WebpackError */
/** @typedef {import("webpack").Asset} Asset */
/** @typedef {import("globby").Options} GlobbyOptions */
/** @typedef {import("globby").GlobEntry} GlobEntry */
/** @typedef {ReturnType<Compilation["getLogger"]>} WebpackLogger */
/** @typedef {ReturnType<Compilation["getCache"]>} CacheFacade */
/** @typedef {ReturnType<ReturnType<Compilation["getCache"]>["getLazyHashedEtag"]>} Etag */
/** @typedef {ReturnType<Compilation["fileSystemInfo"]["mergeSnapshots"]>} Snapshot */
/**
* @typedef {boolean} Force
*/
/**
* @typedef {Object} CopiedResult
* @property {string} sourceFilename
* @property {string} absoluteFilename
* @property {string} filename
* @property {Asset["source"]} source
* @property {Force | undefined} force
* @property {{ [key: string]: string }} info
*/
/**
* @typedef {string} StringPattern
*/
/**
* @typedef {boolean} NoErrorOnMissing
*/
/**
* @typedef {string} Context
*/
/**
* @typedef {string} From
*/
/**
* @callback ToFunction
* @param {{ context: string, absoluteFilename?: string }} pathData
* @return {string}
*/
/**
* @typedef {string | ToFunction} To
*/
/**
* @typedef {"dir" | "file" | "template"} ToType
*/
/**
* @callback TransformerFunction
* @param {Buffer} input
* @param {string} absoluteFilename
*/
/**
* @typedef {{ keys: { [key: string]: any } } | { keys: ((defaultCacheKeys: { [key: string]: any }, absoluteFilename: string) => Promise<{ [key: string]: any }>) }} TransformerCacheObject
*/
/**
* @typedef {Object} TransformerObject
* @property {TransformerFunction} transformer
* @property {boolean | TransformerCacheObject} [cache]
*/
/**
* @typedef {TransformerFunction | TransformerObject} Transform
*/
/**
* @callback Filter
* @param {string} filepath
*/
/**
* @callback TransformAllFunction
* @param {{ data: Buffer, sourceFilename: string, absoluteFilename: string }[]} data
*/
/**
* @typedef { { [key: string]: string } | ((item: { absoluteFilename: string, sourceFilename: string, filename: string, toType: ToType }) => { [key: string]: string }) } Info
*/
/**
* @typedef {Object} ObjectPattern
* @property {From} from
* @property {GlobbyOptions} [globOptions]
* @property {Context} [context]
* @property {To} [to]
* @property {ToType} [toType]
* @property {Info} [info]
* @property {Filter} [filter]
* @property {Transform} [transform]
* @property {TransformAllFunction} [transformAll]
* @property {Force} [force]
* @property {number} [priority]
* @property {NoErrorOnMissing} [noErrorOnMissing]
*/
/**
* @typedef {StringPattern | ObjectPattern} Pattern
*/
/**
* @typedef {Object} AdditionalOptions
* @property {number} [concurrency]
*/
/**
* @typedef {Object} PluginOptions
* @property {Pattern[]} patterns
* @property {AdditionalOptions} [options]
*/
class CopyPlugin {
/**
* @param {PluginOptions} [options]
*/
constructor(options = { patterns: [] }) {
validate(/** @type {Schema} */ (schema), options, {
name: "Copy Plugin",
baseDataPath: "options",
});
/**
* @private
* @type {Pattern[]}
*/
this.patterns = options.patterns;
/**
* @private
* @type {AdditionalOptions}
*/
this.options = options.options || {};
}
/**
* @private
* @param {Compilation} compilation
* @param {number} startTime
* @param {string} dependency
* @returns {Promise<Snapshot | undefined>}
*/
static async createSnapshot(compilation, startTime, dependency) {
// eslint-disable-next-line consistent-return
return new Promise((resolve, reject) => {
compilation.fileSystemInfo.createSnapshot(
startTime,
[dependency],
// @ts-ignore
// eslint-disable-next-line no-undefined
undefined,
// eslint-disable-next-line no-undefined
undefined,
null,
(error, snapshot) => {
if (error) {
reject(error);
return;
}
resolve(snapshot);
}
);
});
}
/**
* @private
* @param {Compilation} compilation
* @param {Snapshot} snapshot
* @returns {Promise<boolean | undefined>}
*/
static async checkSnapshotValid(compilation, snapshot) {
// eslint-disable-next-line consistent-return
return new Promise((resolve, reject) => {
compilation.fileSystemInfo.checkSnapshotValid(
snapshot,
(error, isValid) => {
if (error) {
reject(error);
return;
}
resolve(isValid);
}
);
});
}
/**
* @private
* @param {Compiler} compiler
* @param {Compilation} compilation
* @param {Buffer} source
* @returns {string}
*/
static getContentHash(compiler, compilation, source) {
const { outputOptions } = compilation;
const { hashDigest, hashDigestLength, hashFunction, hashSalt } =
outputOptions;
const hash = compiler.webpack.util.createHash(
/** @type {string} */ (hashFunction)
);
if (hashSalt) {
hash.update(hashSalt);
}
hash.update(source);
const fullContentHash = hash.digest(hashDigest);
return fullContentHash.toString().slice(0, hashDigestLength);
}
/**
* @private
* @param {typeof import("globby").globby} globby
* @param {Compiler} compiler
* @param {Compilation} compilation
* @param {WebpackLogger} logger
* @param {CacheFacade} cache
* @param {ObjectPattern & { context: string }} inputPattern
* @param {number} index
* @returns {Promise<Array<CopiedResult | undefined> | undefined>}
*/
static async runPattern(
globby,
compiler,
compilation,
logger,
cache,
inputPattern,
index
) {
const { RawSource } = compiler.webpack.sources;
const pattern = { ...inputPattern };
const originalFrom = pattern.from;
const normalizedOriginalFrom = path.normalize(originalFrom);
logger.log(
`starting to process a pattern from '${normalizedOriginalFrom}' using '${pattern.context}' context`
);
let absoluteFrom;
if (path.isAbsolute(normalizedOriginalFrom)) {
absoluteFrom = normalizedOriginalFrom;
} else {
absoluteFrom = path.resolve(pattern.context, normalizedOriginalFrom);
}
logger.debug(`getting stats for '${absoluteFrom}'...`);
const { inputFileSystem } = compiler;
let stats;
try {
stats = await stat(inputFileSystem, absoluteFrom);
} catch (error) {
// Nothing
}
/**
* @type {"file" | "dir" | "glob"}
*/
let fromType;
if (stats) {
if (stats.isDirectory()) {
fromType = "dir";
logger.debug(`determined '${absoluteFrom}' is a directory`);
} else if (stats.isFile()) {
fromType = "file";
logger.debug(`determined '${absoluteFrom}' is a file`);
} else {
// Fallback
fromType = "glob";
logger.debug(`determined '${absoluteFrom}' is unknown`);
}
} else {
fromType = "glob";
logger.debug(`determined '${absoluteFrom}' is a glob`);
}
/** @type {GlobbyOptions & { objectMode: true }} */
const globOptions = {
...{ followSymbolicLinks: true },
...(pattern.globOptions || {}),
...{ cwd: pattern.context, objectMode: true },
};
// @ts-ignore
globOptions.fs = inputFileSystem;
let glob;
switch (fromType) {
case "dir":
compilation.contextDependencies.add(absoluteFrom);
logger.debug(`added '${absoluteFrom}' as a context dependency`);
pattern.context = absoluteFrom;
glob = path.posix.join(
fastGlob.escapePath(normalizePath(path.resolve(absoluteFrom))),
"**/*"
);
absoluteFrom = path.join(absoluteFrom, "**/*");
if (typeof globOptions.dot === "undefined") {
globOptions.dot = true;
}
break;
case "file":
compilation.fileDependencies.add(absoluteFrom);
logger.debug(`added '${absoluteFrom}' as a file dependency`);
pattern.context = path.dirname(absoluteFrom);
glob = fastGlob.escapePath(normalizePath(path.resolve(absoluteFrom)));
if (typeof globOptions.dot === "undefined") {
globOptions.dot = true;
}
break;
case "glob":
default: {
const contextDependencies = path.normalize(globParent(absoluteFrom));
compilation.contextDependencies.add(contextDependencies);
logger.debug(`added '${contextDependencies}' as a context dependency`);
glob = path.isAbsolute(originalFrom)
? originalFrom
: path.posix.join(
fastGlob.escapePath(normalizePath(path.resolve(pattern.context))),
originalFrom
);
}
}
logger.log(`begin globbing '${glob}'...`);
/**
* @type {GlobEntry[]}
*/
let globEntries;
try {
globEntries = await globby(glob, globOptions);
} catch (error) {
compilation.errors.push(/** @type {WebpackError} */ (error));
return;
}
if (globEntries.length === 0) {
if (pattern.noErrorOnMissing) {
logger.log(
`finished to process a pattern from '${normalizedOriginalFrom}' using '${pattern.context}' context to '${pattern.to}'`
);
return;
}
const missingError = new Error(`unable to locate '${glob}' glob`);
compilation.errors.push(/** @type {WebpackError} */ (missingError));
return;
}
/**
* @type {Array<CopiedResult | undefined>}
*/
let copiedResult;
try {
copiedResult = await Promise.all(
globEntries.map(
/**
* @param {GlobEntry} globEntry
* @returns {Promise<CopiedResult | undefined>}
*/
async (globEntry) => {
// Exclude directories
if (!globEntry.dirent.isFile()) {
return;
}
if (pattern.filter) {
let isFiltered;
try {
isFiltered = await pattern.filter(globEntry.path);
} catch (error) {
compilation.errors.push(/** @type {WebpackError} */ (error));
return;
}
if (!isFiltered) {
logger.log(`skip '${globEntry.path}', because it was filtered`);
return;
}
}
const from = globEntry.path;
logger.debug(`found '${from}'`);
// `globby`/`fast-glob` return the relative path when the path contains special characters on windows
const absoluteFilename = path.resolve(pattern.context, from);
const to =
typeof pattern.to === "function"
? await pattern.to({
context: pattern.context,
absoluteFilename,
})
: path.normalize(
typeof pattern.to !== "undefined" ? pattern.to : ""
);
const toType = pattern.toType
? pattern.toType
: template.test(to)
? "template"
: path.extname(to) === "" || to.slice(-1) === path.sep
? "dir"
: "file";
logger.log(`'to' option '${to}' determinated as '${toType}'`);
const relativeFrom = path.relative(
pattern.context,
absoluteFilename
);
let filename = toType === "dir" ? path.join(to, relativeFrom) : to;
if (path.isAbsolute(filename)) {
filename = path.relative(
/** @type {string} */ (compiler.options.output.path),
filename
);
}
logger.log(
`determined that '${from}' should write to '${filename}'`
);
const sourceFilename = normalizePath(
path.relative(compiler.context, absoluteFilename)
);
// If this came from a glob or dir, add it to the file dependencies
if (fromType === "dir" || fromType === "glob") {
compilation.fileDependencies.add(absoluteFilename);
logger.debug(`added '${absoluteFilename}' as a file dependency`);
}
let cacheEntry;
logger.debug(`getting cache for '${absoluteFilename}'...`);
try {
cacheEntry = await cache.getPromise(
`${sourceFilename}|${index}`,
null
);
} catch (error) {
compilation.errors.push(/** @type {WebpackError} */ (error));
return;
}
/**
* @type {Asset["source"] | undefined}
*/
let source;
if (cacheEntry) {
logger.debug(`found cache for '${absoluteFilename}'...`);
let isValidSnapshot;
logger.debug(
`checking snapshot on valid for '${absoluteFilename}'...`
);
try {
isValidSnapshot = await CopyPlugin.checkSnapshotValid(
compilation,
cacheEntry.snapshot
);
} catch (error) {
compilation.errors.push(/** @type {WebpackError} */ (error));
return;
}
if (isValidSnapshot) {
logger.debug(`snapshot for '${absoluteFilename}' is valid`);
({ source } = cacheEntry);
} else {
logger.debug(`snapshot for '${absoluteFilename}' is invalid`);
}
} else {
logger.debug(`missed cache for '${absoluteFilename}'`);
}
if (!source) {
const startTime = Date.now();
logger.debug(`reading '${absoluteFilename}'...`);
let data;
try {
data = await readFile(inputFileSystem, absoluteFilename);
} catch (error) {
compilation.errors.push(/** @type {WebpackError} */ (error));
return;
}
logger.debug(`read '${absoluteFilename}'`);
source = new RawSource(data);
let snapshot;
logger.debug(`creating snapshot for '${absoluteFilename}'...`);
try {
snapshot = await CopyPlugin.createSnapshot(
compilation,
startTime,
absoluteFilename
);
} catch (error) {
compilation.errors.push(/** @type {WebpackError} */ (error));
return;
}
if (snapshot) {
logger.debug(`created snapshot for '${absoluteFilename}'`);
logger.debug(`storing cache for '${absoluteFilename}'...`);
try {
await cache.storePromise(`${sourceFilename}|${index}`, null, {
source,
snapshot,
});
} catch (error) {
compilation.errors.push(/** @type {WebpackError} */ (error));
return;
}
logger.debug(`stored cache for '${absoluteFilename}'`);
}
}
if (pattern.transform) {
/**
* @type {TransformerObject}
*/
const transformObj =
typeof pattern.transform === "function"
? { transformer: pattern.transform }
: pattern.transform;
if (transformObj.transformer) {
logger.log(`transforming content for '${absoluteFilename}'...`);
const buffer = source.buffer();
if (transformObj.cache) {
// TODO: remove in the next major release
const hasher =
compiler.webpack &&
compiler.webpack.util &&
compiler.webpack.util.createHash
? compiler.webpack.util.createHash("xxhash64")
: // eslint-disable-next-line global-require
require("crypto").createHash("md4");
const defaultCacheKeys = {
version,
sourceFilename,
transform: transformObj.transformer,
contentHash: hasher.update(buffer).digest("hex"),
index,
};
const cacheKeys = `transform|${serialize(
typeof transformObj.cache === "boolean"
? defaultCacheKeys
: typeof transformObj.cache.keys === "function"
? await transformObj.cache.keys(
defaultCacheKeys,
absoluteFilename
)
: { ...defaultCacheKeys, ...transformObj.cache.keys }
)}`;
logger.debug(
`getting transformation cache for '${absoluteFilename}'...`
);
const cacheItem = cache.getItemCache(
cacheKeys,
cache.getLazyHashedEtag(source)
);
source = await cacheItem.getPromise();
logger.debug(
source
? `found transformation cache for '${absoluteFilename}'`
: `no transformation cache for '${absoluteFilename}'`
);
if (!source) {
const transformed = await transformObj.transformer(
buffer,
absoluteFilename
);
source = new RawSource(transformed);
logger.debug(
`caching transformation for '${absoluteFilename}'...`
);
await cacheItem.storePromise(source);
logger.debug(
`cached transformation for '${absoluteFilename}'`
);
}
} else {
source = new RawSource(
await transformObj.transformer(buffer, absoluteFilename)
);
}
}
}
let info =
typeof pattern.info === "undefined"
? {}
: typeof pattern.info === "function"
? pattern.info({
absoluteFilename,
sourceFilename,
filename,
toType,
}) || {}
: pattern.info || {};
if (toType === "template") {
logger.log(
`interpolating template '${filename}' for '${sourceFilename}'...`
);
const contentHash = CopyPlugin.getContentHash(
compiler,
compilation,
source.buffer()
);
const ext = path.extname(sourceFilename);
const base = path.basename(sourceFilename);
const name = base.slice(0, base.length - ext.length);
const data = {
filename: normalizePath(
path.relative(pattern.context, absoluteFilename)
),
contentHash,
chunk: {
name,
id: /** @type {string} */ (sourceFilename),
hash: contentHash,
},
};
const { path: interpolatedFilename, info: assetInfo } =
compilation.getPathWithInfo(normalizePath(filename), data);
info = { ...info, ...assetInfo };
filename = interpolatedFilename;
logger.log(
`interpolated template '${filename}' for '${sourceFilename}'`
);
} else {
filename = normalizePath(filename);
}
// eslint-disable-next-line consistent-return
return {
sourceFilename,
absoluteFilename,
filename,
source,
info,
force: pattern.force,
};
}
)
);
} catch (error) {
compilation.errors.push(/** @type {WebpackError} */ (error));
return;
}
if (copiedResult.length === 0) {
if (pattern.noErrorOnMissing) {
logger.log(
`finished to process a pattern from '${normalizedOriginalFrom}' using '${pattern.context}' context to '${pattern.to}'`
);
return;
}
const missingError = new Error(
`unable to locate '${glob}' glob after filtering paths`
);
compilation.errors.push(/** @type {WebpackError} */ (missingError));
return;
}
logger.log(
`finished to process a pattern from '${normalizedOriginalFrom}' using '${pattern.context}' context`
);
// eslint-disable-next-line consistent-return
return copiedResult;
}
/**
* @param {Compiler} compiler
*/
apply(compiler) {
const pluginName = this.constructor.name;
compiler.hooks.thisCompilation.tap(pluginName, (compilation) => {
const logger = compilation.getLogger("copy-webpack-plugin");
const cache = compilation.getCache("CopyWebpackPlugin");
/**
* @type {typeof import("globby").globby}
*/
let globby;
compilation.hooks.processAssets.tapAsync(
{
name: "copy-webpack-plugin",
stage: compiler.webpack.Compilation.PROCESS_ASSETS_STAGE_ADDITIONAL,
},
async (unusedAssets, callback) => {
if (typeof globby === "undefined") {
try {
// @ts-ignore
({ globby } = await import("globby"));
} catch (error) {
callback(/** @type {Error} */ (error));
return;
}
}
logger.log("starting to add additional assets...");
const copiedResultMap = new Map();
/**
* @type {(() => Promise<void>)[]}
*/
const scheduledTasks = [];
this.patterns.map(
/**
* @param {Pattern} item
* @param {number} index
* @return {number}
*/
(item, index) =>
scheduledTasks.push(async () => {
/**
* @type {ObjectPattern}
*/
const normalizedPattern =
typeof item === "string" ? { from: item } : { ...item };
const context =
typeof normalizedPattern.context === "undefined"
? compiler.context
: path.isAbsolute(normalizedPattern.context)
? normalizedPattern.context
: path.join(compiler.context, normalizedPattern.context);
normalizedPattern.context = context;
/**
* @type {Array<CopiedResult | undefined> | undefined}
*/
let copiedResult;
try {
copiedResult = await CopyPlugin.runPattern(
globby,
compiler,
compilation,
logger,
cache,
/** @type {ObjectPattern & { context: string }} */ (
normalizedPattern
),
index
);
} catch (error) {
compilation.errors.push(/** @type {WebpackError} */ (error));
return;
}
if (!copiedResult) {
return;
}
/**
* @type {Array<CopiedResult>}
*/
let filteredCopiedResult = copiedResult.filter(
/**
* @param {CopiedResult | undefined} result
* @returns {result is CopiedResult}
*/
(result) => Boolean(result)
);
if (typeof normalizedPattern.transformAll !== "undefined") {
if (typeof normalizedPattern.to === "undefined") {
compilation.errors.push(
/** @type {WebpackError} */
(
new Error(
`Invalid "pattern.to" for the "pattern.from": "${normalizedPattern.from}" and "pattern.transformAll" function. The "to" option must be specified.`
)
)
);
return;
}
filteredCopiedResult.sort((a, b) =>
a.absoluteFilename > b.absoluteFilename
? 1
: a.absoluteFilename < b.absoluteFilename
? -1
: 0
);
const mergedEtag =
filteredCopiedResult.length === 1
? cache.getLazyHashedEtag(filteredCopiedResult[0].source)
: filteredCopiedResult.reduce(
/**
* @param {Etag} accumulator
* @param {CopiedResult} asset
* @param {number} i
* @return {Etag}
*/
// @ts-ignore
(accumulator, asset, i) => {
// eslint-disable-next-line no-param-reassign
accumulator = cache.mergeEtags(
i === 1
? cache.getLazyHashedEtag(
/** @type {CopiedResult}*/ (accumulator)
.source
)
: accumulator,
cache.getLazyHashedEtag(asset.source)
);
return accumulator;
}
);
const cacheItem = cache.getItemCache(
`transformAll|${serialize({
version,
from: normalizedPattern.from,
to: normalizedPattern.to,
transformAll: normalizedPattern.transformAll,
})}`,
mergedEtag
);
let transformedAsset = await cacheItem.getPromise();
if (!transformedAsset) {
transformedAsset = { filename: normalizedPattern.to };
try {
transformedAsset.data =
await normalizedPattern.transformAll(
filteredCopiedResult.map((asset) => {
return {
data: asset.source.buffer(),
sourceFilename: asset.sourceFilename,
absoluteFilename: asset.absoluteFilename,
};
})
);
} catch (error) {
compilation.errors.push(
/** @type {WebpackError} */ (error)
);
return;
}
const filename =
typeof normalizedPattern.to === "function"
? normalizedPattern.to({ context })
: normalizedPattern.to;
if (template.test(filename)) {
const contentHash = CopyPlugin.getContentHash(
compiler,
compilation,
transformedAsset.data
);
const { path: interpolatedFilename, info: assetInfo } =
compilation.getPathWithInfo(normalizePath(filename), {
contentHash,
chunk: {
id: "unknown-copied-asset",
hash: contentHash,
},
});
transformedAsset.filename = interpolatedFilename;
transformedAsset.info = assetInfo;
}
const { RawSource } = compiler.webpack.sources;
transformedAsset.source = new RawSource(
transformedAsset.data
);
transformedAsset.force = normalizedPattern.force;
await cacheItem.storePromise(transformedAsset);
}
filteredCopiedResult = [transformedAsset];
}
const priority = normalizedPattern.priority || 0;
if (!copiedResultMap.has(priority)) {
copiedResultMap.set(priority, []);
}