60 lines
2.0 KiB
JavaScript
60 lines
2.0 KiB
JavaScript
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/**
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* @author Toru Nagashima
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* See LICENSE file in root directory for full license.
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*/
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"use strict"
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const path = require("path")
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const { CALL, ReferenceTracker, getStringIfConstant } = require("eslint-utils")
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const resolve = require("resolve")
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const getResolvePaths = require("./get-resolve-paths")
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const getTryExtensions = require("./get-try-extensions")
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const ImportTarget = require("./import-target")
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const stripImportPathParams = require("./strip-import-path-params")
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/**
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* Gets a list of `require()` targets.
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*
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* Core modules of Node.js (e.g. `fs`, `http`) are excluded.
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*
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* @param {RuleContext} context - The rule context.
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* @param {Object} [options] - The flag to include core modules.
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* @param {boolean} [options.includeCore] - The flag to include core modules.
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* @param {function(ImportTarget[]):void} callback The callback function to get result.
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* @returns {Object} The visitor.
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*/
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module.exports = function visitRequire(
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context,
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{ includeCore = false } = {},
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callback
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) {
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const targets = []
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const basedir = path.dirname(path.resolve(context.getFilename()))
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const paths = getResolvePaths(context)
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const extensions = getTryExtensions(context)
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const options = { basedir, paths, extensions }
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return {
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"Program:exit"() {
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const tracker = new ReferenceTracker(context.getScope())
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const references = tracker.iterateGlobalReferences({
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require: {
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[CALL]: true,
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resolve: { [CALL]: true },
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},
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})
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for (const { node } of references) {
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const targetNode = node.arguments[0]
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const rawName = getStringIfConstant(targetNode)
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const name = rawName && stripImportPathParams(rawName)
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if (name && (includeCore || !resolve.isCore(name))) {
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targets.push(new ImportTarget(targetNode, name, options))
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}
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}
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callback(targets)
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},
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}
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}
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