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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Ivan Kopeykin @vankop
*/
"use strict";
const forEachBail = require("./forEachBail");
/** @typedef {import("./Resolver")} Resolver */
/** @typedef {import("./Resolver").ResolveRequest} ResolveRequest */
/** @typedef {import("./Resolver").ResolveStepHook} ResolveStepHook */
class RootsPlugin {
/**
* @param {string | ResolveStepHook} source source hook
* @param {Set<string>} roots roots
* @param {string | ResolveStepHook} target target hook
*/
constructor(source, roots, target) {
this.roots = Array.from(roots);
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("RootsPlugin", (request, resolveContext, callback) => {
const req = request.request;
if (!req) return callback();
if (!req.startsWith("/")) return callback();
forEachBail(
this.roots,
/**
* @param {string} root root
* @param {(err?: null|Error, result?: null|ResolveRequest) => void} callback callback
* @returns {void}
*/
(root, callback) => {
const path = resolver.join(root, req.slice(1));
/** @type {ResolveRequest} */
const obj = {
...request,
path,
relativePath: request.relativePath && path
};
resolver.doResolve(
target,
obj,
`root path ${root}`,
resolveContext,
callback
);
},
callback
);
});
}
}
module.exports = RootsPlugin;
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