Constnium/node_modules/eslint-plugin-n/lib/util/visit-require.js

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2022-06-23 02:27:43 +02:00
/**
* @author Toru Nagashima
* See LICENSE file in root directory for full license.
*/
"use strict"
const path = require("path")
const { CALL, ReferenceTracker, getStringIfConstant } = require("eslint-utils")
const isCoreModule = require("is-core-module")
const getResolvePaths = require("./get-resolve-paths")
const getTryExtensions = require("./get-try-extensions")
const ImportTarget = require("./import-target")
const stripImportPathParams = require("./strip-import-path-params")
/**
* Gets a list of `require()` targets.
*
* Core modules of Node.js (e.g. `fs`, `http`) are excluded.
*
* @param {RuleContext} context - The rule context.
* @param {Object} [options] - The flag to include core modules.
* @param {boolean} [options.includeCore] - The flag to include core modules.
* @param {function(ImportTarget[]):void} callback The callback function to get result.
* @returns {Object} The visitor.
*/
module.exports = function visitRequire(
context,
{ includeCore = false } = {},
callback
) {
const targets = []
const basedir = path.dirname(path.resolve(context.getFilename()))
const paths = getResolvePaths(context)
const extensions = getTryExtensions(context)
const options = { basedir, paths, extensions }
return {
"Program:exit"() {
const tracker = new ReferenceTracker(context.getScope())
const references = tracker.iterateGlobalReferences({
require: {
[CALL]: true,
resolve: { [CALL]: true },
},
})
for (const { node } of references) {
const targetNode = node.arguments[0]
const rawName = getStringIfConstant(targetNode)
const name = rawName && stripImportPathParams(rawName)
// Note: "999" arbitrary to check current/future Node.js version
if (name && (includeCore || !isCoreModule(name, "999"))) {
targets.push(
new ImportTarget(targetNode, name, options, "require")
)
}
}
callback(targets)
},
}
}