JoinRequestPartPlugin.js
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
/** @typedef {import("./Resolver")} Resolver */
/** @typedef {import("./Resolver").ResolveRequest} ResolveRequest */
/** @typedef {import("./Resolver").ResolveStepHook} ResolveStepHook */
const namespaceStartCharCode = "@".charCodeAt(0);
module.exports = class JoinRequestPartPlugin {
/**
* @param {string | ResolveStepHook} source source
* @param {string | ResolveStepHook} target target
*/
constructor(source, target) {
this.source = source;
this.target = target;
}
/**
* @param {Resolver} resolver the resolver
* @returns {void}
*/
apply(resolver) {
const target = resolver.ensureHook(this.target);
resolver
.getHook(this.source)
.tapAsync(
"JoinRequestPartPlugin",
(request, resolveContext, callback) => {
const req = request.request || "";
let i = req.indexOf("/", 3);
if (i >= 0 && req.charCodeAt(2) === namespaceStartCharCode) {
i = req.indexOf("/", i + 1);
}
/** @type {string} */
let moduleName;
/** @type {string} */
let remainingRequest;
/** @type {boolean} */
let fullySpecified;
if (i < 0) {
moduleName = req;
remainingRequest = ".";
fullySpecified = false;
} else {
moduleName = req.slice(0, i);
remainingRequest = "." + req.slice(i);
fullySpecified = /** @type {boolean} */ (request.fullySpecified);
}
/** @type {ResolveRequest} */
const obj = {
...request,
path: resolver.join(
/** @type {string} */
(request.path),
moduleName
),
relativePath:
request.relativePath &&
resolver.join(request.relativePath, moduleName),
request: remainingRequest,
fullySpecified
};
resolver.doResolve(target, obj, null, resolveContext, callback);
}
);
}
};