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/**
* @author Toru Nagashima
* See LICENSE file in root directory for full license.
*/
"use strict"
const { ReferenceTracker } = require("eslint-utils")
/**
* Verifier for `prefer-global/*` rules.
*/
class Verifier {
/**
* Initialize this instance.
* @param {RuleContext} context The rule context to report.
* @param {{modules:object,globals:object}} trackMap The track map.
*/
constructor(context, trackMap) {
this.context = context
this.trackMap = trackMap
this.verify =
context.options[0] === "never"
? this.verifyToPreferModules
: this.verifyToPreferGlobals
}
/**
* Verify the code to suggest the use of globals.
* @returns {void}
*/
verifyToPreferGlobals() {
const { context, trackMap } = this
const tracker = new ReferenceTracker(context.getScope(), {
mode: "legacy",
})
for (const { node } of [
...tracker.iterateCjsReferences(trackMap.modules),
...tracker.iterateEsmReferences(trackMap.modules),
]) {
context.report({ node, messageId: "preferGlobal" })
}
}
/**
* Verify the code to suggest the use of modules.
* @returns {void}
*/
verifyToPreferModules() {
const { context, trackMap } = this
const tracker = new ReferenceTracker(context.getScope())
for (const { node } of tracker.iterateGlobalReferences(
trackMap.globals
)) {
context.report({ node, messageId: "preferModule" })
}
}
}
module.exports = function checkForPreferGlobal(context, trackMap) {
new Verifier(context, trackMap).verify()
}