chore: use mjs (#55)

.c8rc.json

@@ -0,0 +1,4 @@
+{
+    "include": ["src/**/*.mjs"],
+    "reporter": ["lcov", "text-summary"]
+}

.eslintrc.js

@@ -9,7 +9,7 @@ module.exports = {
     },
     overrides: [
         {
-            files: ["src/**/*.js", "test/**/*.js"],
+            files: ["src/**/*.mjs", "test/**/*.mjs"],
             extends: ["plugin:@eslint-community/mysticatea/+modules"],
             rules: {
                 "init-declarations": "off",

package.json

@@ -39,25 +39,22 @@
         "format:prettier": "prettier .",
         "format:check": "npm run -s format:prettier -- --check",
         "lint": "eslint .",
-        "test": "nyc mocha --reporter dot \"test/*.js\"",
+        "test": "c8 mocha --reporter dot \"test/*.mjs\"",
         "preversion": "npm test && npm run -s build",
         "postversion": "git push && git push --tags",
         "prewatch": "npm run -s clean",
-        "watch": "warun \"{src,test}/**/*.js\" -- npm run -s test:mocha"
+        "watch": "warun \"{src,test}/**/*.mjs\" -- npm run -s test:mocha"
     },
     "dependencies": {
         "eslint-visitor-keys": "^3.3.0"
     },
     "devDependencies": {
-        "@babel/core": "^7.20.2",
-        "@babel/plugin-transform-modules-commonjs": "^7.19.6",
-        "@babel/register": "^7.18.9",
         "@eslint-community/eslint-plugin-mysticatea": "^15.2.0",
+        "c8": "^7.12.0",
         "dot-prop": "^6.0.1",
         "eslint": "^8.28.0",
         "mocha": "^9.2.2",
         "npm-run-all": "^4.1.5",
-        "nyc": "^15.1.0",
         "opener": "^1.5.2",
         "prettier": "2.8.3",
         "rimraf": "^3.0.2",

rollup.config.js

@@ -12,7 +12,7 @@ import packageInfo from "./package.json"
  */
 function config(ext) {
     return {
-        input: "src/index.js",
+        input: "src/index.mjs",
         output: {
             exports: ext === ".mjs" ? undefined : "named",
             file: `index${ext}`,

src/find-variable.js → src/find-variable.mjs

@@ -1,4 +1,4 @@
-import { getInnermostScope } from "./get-innermost-scope"
+import { getInnermostScope } from "./get-innermost-scope.mjs"
 
 /**
  * Find the variable of a given name.

src/get-function-head-location.js → src/get-function-head-location.mjs

@@ -1,4 +1,4 @@
-import { isArrowToken, isOpeningParenToken } from "./token-predicate"
+import { isArrowToken, isOpeningParenToken } from "./token-predicate.mjs"
 
 /**
  * Get the `(` token of the given function node.

src/get-function-name-with-kind.js → src/get-function-name-with-kind.mjs

@@ -1,4 +1,4 @@
-import { getPropertyName } from "./get-property-name"
+import { getPropertyName } from "./get-property-name.mjs"
 
 /**
  * Get the name and kind of the given function node.

src/get-property-name.js → src/get-property-name.mjs

@@ -1,4 +1,4 @@
-import { getStringIfConstant } from "./get-string-if-constant"
+import { getStringIfConstant } from "./get-string-if-constant.mjs"
 
 /**
  * Get the property name from a MemberExpression node or a Property node.

src/get-static-value.js → src/get-static-value.mjs

@@ -1,6 +1,6 @@
 /* globals globalThis, global, self, window */
 
-import { findVariable } from "./find-variable"
+import { findVariable } from "./find-variable.mjs"
 
 const globalObject =
     typeof globalThis !== "undefined"

src/get-string-if-constant.js → src/get-string-if-constant.mjs

@@ -1,4 +1,4 @@
-import { getStaticValue } from "./get-static-value"
+import { getStaticValue } from "./get-static-value.mjs"
 
 /**
  * Get the value of a given node if it's a literal or a template literal.

src/index.js → src/index.mjs

@@ -1,20 +1,20 @@
-import { findVariable } from "./find-variable"
-import { getFunctionHeadLocation } from "./get-function-head-location"
-import { getFunctionNameWithKind } from "./get-function-name-with-kind"
-import { getInnermostScope } from "./get-innermost-scope"
-import { getPropertyName } from "./get-property-name"
-import { getStaticValue } from "./get-static-value"
-import { getStringIfConstant } from "./get-string-if-constant"
-import { hasSideEffect } from "./has-side-effect"
-import { isParenthesized } from "./is-parenthesized"
-import { PatternMatcher } from "./pattern-matcher"
+import { findVariable } from "./find-variable.mjs"
+import { getFunctionHeadLocation } from "./get-function-head-location.mjs"
+import { getFunctionNameWithKind } from "./get-function-name-with-kind.mjs"
+import { getInnermostScope } from "./get-innermost-scope.mjs"
+import { getPropertyName } from "./get-property-name.mjs"
+import { getStaticValue } from "./get-static-value.mjs"
+import { getStringIfConstant } from "./get-string-if-constant.mjs"
+import { hasSideEffect } from "./has-side-effect.mjs"
+import { isParenthesized } from "./is-parenthesized.mjs"
+import { PatternMatcher } from "./pattern-matcher.mjs"
 import {
     CALL,
     CONSTRUCT,
     ESM,
     READ,
     ReferenceTracker,
-} from "./reference-tracker"
+} from "./reference-tracker.mjs"
 import {
     isArrowToken,
     isClosingBraceToken,
@@ -38,7 +38,7 @@ import {
     isOpeningBracketToken,
     isOpeningParenToken,
     isSemicolonToken,
-} from "./token-predicate"
+} from "./token-predicate.mjs"
 
 export default {
     CALL,

src/is-parenthesized.js → src/is-parenthesized.mjs

@@ -1,4 +1,4 @@
-import { isClosingParenToken, isOpeningParenToken } from "./token-predicate"
+import { isClosingParenToken, isOpeningParenToken } from "./token-predicate.mjs"
 
 /**
  * Get the left parenthesis of the parent node syntax if it exists.

src/reference-tracker.js → src/reference-tracker.mjs

@@ -1,6 +1,6 @@
-import { findVariable } from "./find-variable"
-import { getPropertyName } from "./get-property-name"
-import { getStringIfConstant } from "./get-string-if-constant"
+import { findVariable } from "./find-variable.mjs"
+import { getPropertyName } from "./get-property-name.mjs"
+import { getStringIfConstant } from "./get-string-if-constant.mjs"
 
 const IMPORT_TYPE = /^(?:Import|Export(?:All|Default|Named))Declaration$/u
 const has = Function.call.bind(Object.hasOwnProperty)

test/find-variable.js → test/find-variable.mjs

@@ -1,6 +1,6 @@
 import assert from "assert"
 import eslint from "eslint"
-import { findVariable } from "../src/"
+import { findVariable } from "../src/index.mjs"
 
 describe("The 'findVariable' function", () => {
     function getVariable(code, selector, withString = null) {

test/get-function-head-location.js → test/get-function-head-location.mjs

@@ -1,7 +1,7 @@
 import assert from "assert"
 import eslint from "eslint"
 import semver from "semver"
-import { getFunctionHeadLocation } from "../src/"
+import { getFunctionHeadLocation } from "../src/index.mjs"
 
 describe("The 'getFunctionHeadLocation' function", () => {
     const expectedResults = {

test/get-function-name-with-kind.js → test/get-function-name-with-kind.mjs

@@ -1,7 +1,7 @@
 import assert from "assert"
 import eslint from "eslint"
 import semver from "semver"
-import { getFunctionNameWithKind } from "../src/"
+import { getFunctionNameWithKind } from "../src/index.mjs"
 
 describe("The 'getFunctionNameWithKind' function", () => {
     const expectedResults = {

test/get-innermost-scope.js → test/get-innermost-scope.mjs

@@ -1,6 +1,6 @@
 import assert from "assert"
 import eslint from "eslint"
-import { getInnermostScope } from "../src/"
+import { getInnermostScope } from "../src/index.mjs"
 
 describe("The 'getInnermostScope' function", () => {
     let i = 0

test/get-property-name.js → test/get-property-name.mjs

@@ -1,7 +1,7 @@
 import assert from "assert"
 import eslint from "eslint"
 import semver from "semver"
-import { getPropertyName } from "../src/"
+import { getPropertyName } from "../src/index.mjs"
 
 describe("The 'getPropertyName' function", () => {
     for (const { code, expected } of [

test/get-static-value.js → test/get-static-value.mjs

@@ -1,7 +1,7 @@
 import assert from "assert"
 import eslint from "eslint"
 import semver from "semver"
-import { getStaticValue } from "../src/"
+import { getStaticValue } from "../src/index.mjs"
 
 describe("The 'getStaticValue' function", () => {
     for (const { code, expected, noScope = false } of [

test/get-string-if-constant.js → test/get-string-if-constant.mjs

@@ -1,6 +1,6 @@
 import assert from "assert"
 import eslint from "eslint"
-import { getStringIfConstant } from "../src/"
+import { getStringIfConstant } from "../src/index.mjs"
 
 describe("The 'getStringIfConstant' function", () => {
     for (const { code, expected } of [

test/has-side-effect.js → test/has-side-effect.mjs

@@ -1,8 +1,8 @@
 import assert from "assert"
+import dp from "dot-prop"
 import eslint from "eslint"
 import semver from "semver"
-import dp from "dot-prop"
-import { hasSideEffect } from "../src/"
+import { hasSideEffect } from "../src/index.mjs"
 
 describe("The 'hasSideEffect' function", () => {
     for (const { code, key = "body.0.expression", options, expected } of [

test/is-parenthesized.js → test/is-parenthesized.mjs

@@ -1,7 +1,7 @@
 import assert from "assert"
 import dotProp from "dot-prop"
 import eslint from "eslint"
-import { isParenthesized } from "../src/"
+import { isParenthesized } from "../src/index.mjs"
 
 describe("The 'isParenthesized' function", () => {
     for (const { code, expected } of [

test/pattern-matcher.js → test/pattern-matcher.mjs

@@ -1,5 +1,5 @@
 import assert from "assert"
-import { PatternMatcher } from "../src/"
+import { PatternMatcher } from "../src/index.mjs"
 
 const NAMED_CAPTURE_GROUP_SUPPORTED = (() => {
     try {

test/reference-tracker.js → test/reference-tracker.mjs

@@ -1,7 +1,7 @@
 import assert from "assert"
 import eslint from "eslint"
 import semver from "semver"
-import { CALL, CONSTRUCT, ESM, READ, ReferenceTracker } from "../src/"
+import { CALL, CONSTRUCT, ESM, READ, ReferenceTracker } from "../src/index.mjs"
 
 const config = {
     parserOptions: {

test/token-predicate.js → test/token-predicate.mjs

@@ -22,7 +22,7 @@ import {
     isOpeningBracketToken,
     isOpeningParenToken,
     isSemicolonToken,
-} from "../src/"
+} from "../src/index.mjs"
 
 describe("The predicate functions for tokens", () => {
     for (const { positive, negative, patterns } of [