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codeql-action/node_modules/enhanced-resolve/lib/AliasPlugin.js
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/* | |
MIT License http://www.opensource.org/licenses/mit-license.php | |
Author Tobias Koppers @sokra | |
*/ | |
"use strict"; | |
const forEachBail = require("./forEachBail"); | |
const { PathType, getType } = require("./util/path"); | |
/** @typedef {import("./Resolver")} Resolver */ | |
/** @typedef {import("./Resolver").ResolveRequest} ResolveRequest */ | |
/** @typedef {import("./Resolver").ResolveStepHook} ResolveStepHook */ | |
/** @typedef {{alias: string|Array<string>|false, name: string, onlyModule?: boolean}} AliasOption */ | |
module.exports = class AliasPlugin { | |
/** | |
* @param {string | ResolveStepHook} source source | |
* @param {AliasOption | Array<AliasOption>} options options | |
* @param {string | ResolveStepHook} target target | |
*/ | |
constructor(source, options, target) { | |
this.source = source; | |
this.options = Array.isArray(options) ? options : [options]; | |
this.target = target; | |
} | |
/** | |
* @param {Resolver} resolver the resolver | |
* @returns {void} | |
*/ | |
apply(resolver) { | |
const target = resolver.ensureHook(this.target); | |
const getAbsolutePathWithSlashEnding = maybeAbsolutePath => { | |
const type = getType(maybeAbsolutePath); | |
if (type === PathType.AbsolutePosix || type === PathType.AbsoluteWin) { | |
return resolver.join(maybeAbsolutePath, "_").slice(0, -1); | |
} | |
return null; | |
}; | |
const isSubPath = (path, maybeSubPath) => { | |
const absolutePath = getAbsolutePathWithSlashEnding(maybeSubPath); | |
if (!absolutePath) return false; | |
return path.startsWith(absolutePath); | |
}; | |
resolver | |
.getHook(this.source) | |
.tapAsync("AliasPlugin", (request, resolveContext, callback) => { | |
const innerRequest = request.request || request.path; | |
if (!innerRequest) return callback(); | |
forEachBail( | |
this.options, | |
(item, callback) => { | |
let shouldStop = false; | |
if ( | |
innerRequest === item.name || | |
(!item.onlyModule && | |
(request.request | |
? innerRequest.startsWith(`${item.name}/`) | |
: isSubPath(innerRequest, item.name))) | |
) { | |
const remainingRequest = innerRequest.substr(item.name.length); | |
const resolveWithAlias = (alias, callback) => { | |
if (alias === false) { | |
/** @type {ResolveRequest} */ | |
const ignoreObj = { | |
...request, | |
path: false | |
}; | |
if (typeof resolveContext.yield === "function") { | |
resolveContext.yield(ignoreObj); | |
return callback(null, null); | |
} | |
return callback(null, ignoreObj); | |
} | |
if ( | |
innerRequest !== alias && | |
!innerRequest.startsWith(alias + "/") | |
) { | |
shouldStop = true; | |
const newRequestStr = alias + remainingRequest; | |
const obj = { | |
...request, | |
request: newRequestStr, | |
fullySpecified: false | |
}; | |
return resolver.doResolve( | |
target, | |
obj, | |
"aliased with mapping '" + | |
item.name + | |
"': '" + | |
alias + | |
"' to '" + | |
newRequestStr + | |
"'", | |
resolveContext, | |
(err, result) => { | |
if (err) return callback(err); | |
if (result) return callback(null, result); | |
return callback(); | |
} | |
); | |
} | |
return callback(); | |
}; | |
const stoppingCallback = (err, result) => { | |
if (err) return callback(err); | |
if (result) return callback(null, result); | |
// Don't allow other aliasing or raw request | |
if (shouldStop) return callback(null, null); | |
return callback(); | |
}; | |
if (Array.isArray(item.alias)) { | |
return forEachBail( | |
item.alias, | |
resolveWithAlias, | |
stoppingCallback | |
); | |
} else { | |
return resolveWithAlias(item.alias, stoppingCallback); | |
} | |
} | |
return callback(); | |
}, | |
callback | |
); | |
}); | |
} | |
}; |