dd5a4e1d75We have been stalled on ESLint 3.8.0 for some time. Current ESLint is 3.13.0. We have been unable to upgrade because of more aggressive reporting on some rules, including indentation. ESLint configuration options and bugfixes are now such that we can reasonably upgrade. PR-URL: https://github.com/nodejs/node/pull/10561 Reviewed-By: Teddy Katz <teddy.katz@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Sam Roberts <vieuxtech@gmail.com>
85 lines
2.9 KiB
JavaScript
85 lines
2.9 KiB
JavaScript
/**
|
|
* @fileoverview Implements the Node.js require.resolve algorithm
|
|
* @author Nicholas C. Zakas
|
|
*/
|
|
|
|
"use strict";
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Requirements
|
|
//------------------------------------------------------------------------------
|
|
|
|
const Module = require("module");
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Private
|
|
//------------------------------------------------------------------------------
|
|
|
|
const DEFAULT_OPTIONS = {
|
|
|
|
/*
|
|
* module.paths is an array of paths to search for resolving things relative
|
|
* to this file. Module.globalPaths contains all of the special Node.js
|
|
* directories that can also be searched for modules.
|
|
*
|
|
* Need to check for existence of module.paths because Jest seems not to
|
|
* include it. See https://github.com/eslint/eslint/issues/5791.
|
|
*/
|
|
lookupPaths: module.paths ? module.paths.concat(Module.globalPaths) : Module.globalPaths.concat()
|
|
};
|
|
|
|
/**
|
|
* Resolves modules based on a set of options.
|
|
*/
|
|
class ModuleResolver {
|
|
|
|
/**
|
|
* Resolves modules based on a set of options.
|
|
* @param {Object} options The options for resolving modules.
|
|
* @param {string[]} options.lookupPaths An array of paths to include in the
|
|
* lookup with the highest priority paths coming first.
|
|
*/
|
|
constructor(options) {
|
|
this.options = Object.assign({}, DEFAULT_OPTIONS, options || {});
|
|
}
|
|
|
|
/**
|
|
* Resolves the file location of a given module relative to the configured
|
|
* lookup paths.
|
|
* @param {string} name The module name to resolve.
|
|
* @param {string} extraLookupPath An extra path to look into for the module.
|
|
* This path is used with the highest priority.
|
|
* @returns {string} The resolved file path for the module.
|
|
* @throws {Error} If the module cannot be resolved.
|
|
*/
|
|
resolve(name, extraLookupPath) {
|
|
|
|
/*
|
|
* First, clone the lookup paths so we're not messing things up for
|
|
* subsequent calls to this function. Then, move the extraLookupPath to the
|
|
* top of the lookup paths list so it will be searched first.
|
|
*/
|
|
const lookupPaths = this.options.lookupPaths.concat();
|
|
|
|
lookupPaths.unshift(extraLookupPath);
|
|
|
|
/**
|
|
* Module._findPath is an internal method to Node.js, then one they use to
|
|
* lookup file paths when require() is called. So, we are hooking into the
|
|
* exact same logic that Node.js uses.
|
|
*/
|
|
const result = Module._findPath(name, lookupPaths); // eslint-disable-line no-underscore-dangle
|
|
|
|
if (!result) {
|
|
throw new Error(`Cannot find module '${name}'`);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Public API
|
|
//------------------------------------------------------------------------------
|
|
|
|
module.exports = ModuleResolver;
|