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