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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const DescriptionFileUtils = require("./DescriptionFileUtils");
/** @typedef {import("./Resolver")} Resolver */
/** @typedef {import("./Resolver").ResolveRequest} ResolveRequest */
/** @typedef {import("./Resolver").ResolveStepHook} ResolveStepHook */
module.exports = class DescriptionFilePlugin {
/**
* @param {string | ResolveStepHook} source source
* @param {string[]} filenames filenames
* @param {boolean} pathIsFile pathIsFile
* @param {string | ResolveStepHook} target target
*/
constructor(source, filenames, pathIsFile, target) {
this.source = source;
this.filenames = filenames;
this.pathIsFile = pathIsFile;
this.target = target;
}
/**
* @param {Resolver} resolver the resolver
* @returns {void}
*/
apply(resolver) {
const target = resolver.ensureHook(this.target);
resolver
.getHook(this.source)
.tapAsync(
"DescriptionFilePlugin",
(request, resolveContext, callback) => {
const { path } = request;
if (!path) return callback();
const directory = this.pathIsFile
? DescriptionFileUtils.cdUp(path)
: path;
if (!directory) return callback();
DescriptionFileUtils.loadDescriptionFile(
resolver,
directory,
this.filenames,
request.descriptionFilePath
? {
path: request.descriptionFilePath,
content: request.descriptionFileData,
directory:
/** @type {string} */
(request.descriptionFileRoot),
}
: undefined,
resolveContext,
(err, result) => {
if (err) return callback(err);
if (!result) {
if (resolveContext.log) {
resolveContext.log(
`No description file found in ${directory} or above`,
);
}
return callback();
}
const relativePath = `.${path
.slice(result.directory.length)
.replace(/\\/g, "/")}`;
/** @type {ResolveRequest} */
const obj = {
...request,
descriptionFilePath: result.path,
descriptionFileData: result.content,
descriptionFileRoot: result.directory,
relativePath,
};
resolver.doResolve(
target,
obj,
`using description file: ${result.path} (relative path: ${relativePath})`,
resolveContext,
(err, result) => {
if (err) return callback(err);
// Don't allow other processing
if (result === undefined) return callback(null, null);
callback(null, result);
},
);
},
);
},
);
}
};
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