You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
102 lines
3.0 KiB
102 lines
3.0 KiB
4 weeks ago
|
/*
|
||
|
|
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 */
|
||
|
|
/** @typedef {{ alias: string|string[], extension: string }} ExtensionAliasOption */
|
||
|
|
|
||
|
|
module.exports = class ExtensionAliasPlugin {
|
||
|
|
/**
|
||
|
|
* @param {string | ResolveStepHook} source source
|
||
|
|
* @param {ExtensionAliasOption} options options
|
||
|
|
* @param {string | ResolveStepHook} target target
|
||
|
|
*/
|
||
|
|
constructor(source, options, target) {
|
||
|
|
this.source = source;
|
||
|
|
this.options = options;
|
||
|
|
this.target = target;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param {Resolver} resolver the resolver
|
||
|
|
* @returns {void}
|
||
|
|
*/
|
||
|
|
apply(resolver) {
|
||
|
|
const target = resolver.ensureHook(this.target);
|
||
|
|
const { extension, alias } = this.options;
|
||
|
|
resolver
|
||
|
|
.getHook(this.source)
|
||
|
|
.tapAsync("ExtensionAliasPlugin", (request, resolveContext, callback) => {
|
||
|
|
const requestPath = request.request;
|
||
|
|
if (!requestPath || !requestPath.endsWith(extension)) return callback();
|
||
|
|
const isAliasString = typeof alias === "string";
|
||
|
|
/**
|
||
|
|
* @param {string} alias extension alias
|
||
|
|
* @param {(err?: null|Error, result?: null|ResolveRequest) => void} callback callback
|
||
|
|
* @param {number} [index] index
|
||
|
|
* @returns {void}
|
||
|
|
*/
|
||
|
|
const resolve = (alias, callback, index) => {
|
||
|
|
const newRequest = `${requestPath.slice(
|
||
|
|
0,
|
||
|
|
-extension.length
|
||
|
|
)}${alias}`;
|
||
|
|
|
||
|
|
return resolver.doResolve(
|
||
|
|
target,
|
||
|
|
{
|
||
|
|
...request,
|
||
|
|
request: newRequest,
|
||
|
|
fullySpecified: true
|
||
|
|
},
|
||
|
|
`aliased from extension alias with mapping '${extension}' to '${alias}'`,
|
||
|
|
resolveContext,
|
||
|
|
(err, result) => {
|
||
|
|
// Throw error if we are on the last alias (for multiple aliases) and it failed, always throw if we are not an array or we have only one alias
|
||
|
|
if (!isAliasString && index) {
|
||
|
|
if (index !== this.options.alias.length) {
|
||
|
|
if (resolveContext.log) {
|
||
|
|
resolveContext.log(
|
||
|
|
`Failed to alias from extension alias with mapping '${extension}' to '${alias}' for '${newRequest}': ${err}`
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
return callback(null, result);
|
||
|
|
}
|
||
|
|
|
||
|
|
return callback(err, result);
|
||
|
|
} else {
|
||
|
|
callback(err, result);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
);
|
||
|
|
};
|
||
|
|
/**
|
||
|
|
* @param {null|Error} [err] error
|
||
|
|
* @param {null|ResolveRequest} [result] result
|
||
|
|
* @returns {void}
|
||
|
|
*/
|
||
|
|
const stoppingCallback = (err, result) => {
|
||
|
|
if (err) return callback(err);
|
||
|
|
if (result) return callback(null, result);
|
||
|
|
// Don't allow other aliasing or raw request
|
||
|
|
return callback(null, null);
|
||
|
|
};
|
||
|
|
if (isAliasString) {
|
||
|
|
resolve(alias, stoppingCallback);
|
||
|
|
} else if (alias.length > 1) {
|
||
|
|
forEachBail(alias, resolve, stoppingCallback);
|
||
|
|
} else {
|
||
|
|
resolve(alias[0], stoppingCallback);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
};
|