/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const forEachBail = require("./forEachBail");
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const getPaths = require("./getPaths");
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/** @typedef {import("./Resolver")} Resolver */
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/** @typedef {import("./Resolver").ResolveRequest} ResolveRequest */
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/** @typedef {import("./Resolver").ResolveStepHook} ResolveStepHook */
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module.exports = class ModulesInHierarchicalDirectoriesPlugin {
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/**
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* @param {string | ResolveStepHook} source source
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* @param {string | Array<string>} directories directories
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* @param {string | ResolveStepHook} target target
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*/
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constructor(source, directories, target) {
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this.source = source;
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this.directories = /** @type {Array<string>} */ [...directories];
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this.target = target;
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}
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/**
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* @param {Resolver} resolver the resolver
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* @returns {void}
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*/
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apply(resolver) {
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const target = resolver.ensureHook(this.target);
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resolver
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.getHook(this.source)
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.tapAsync(
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"ModulesInHierarchicalDirectoriesPlugin",
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(request, resolveContext, callback) => {
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const fs = resolver.fileSystem;
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const addrs = getPaths(/** @type {string} */ (request.path))
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.paths.map((path) =>
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this.directories.map((directory) =>
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resolver.join(path, directory),
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),
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)
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.reduce((array, path) => {
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array.push(...path);
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return array;
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}, []);
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forEachBail(
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addrs,
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/**
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* @param {string} addr addr
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* @param {(err?: null|Error, result?: null|ResolveRequest) => void} callback callback
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* @returns {void}
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*/
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(addr, callback) => {
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fs.stat(addr, (err, stat) => {
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if (!err && stat && stat.isDirectory()) {
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/** @type {ResolveRequest} */
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const obj = {
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...request,
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path: addr,
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request: `./${request.request}`,
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module: false,
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};
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const message = `looking for modules in ${addr}`;
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return resolver.doResolve(
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target,
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obj,
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message,
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resolveContext,
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callback,
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);
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}
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if (resolveContext.log) {
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resolveContext.log(
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`${addr} doesn't exist or is not a directory`,
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);
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}
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if (resolveContext.missingDependencies) {
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resolveContext.missingDependencies.add(addr);
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}
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return callback();
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});
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},
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callback,
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);
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},
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);
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}
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};
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