feat(esm): convert to esm (#2569)

for #2543

BREAKING CHANGE: semantic-release is now ESM-only. since it is used through its own executable, the impact on consuming projects should be minimal

BREAKING CHANGE: references to plugin files in configs need to include the file extension because of executing in an ESM context

lib/branches/expand.js

@@ -1,8 +1,8 @@
-const {isString, remove, omit, mapValues, template} = require('lodash');
-const micromatch = require('micromatch');
-const {getBranches} = require('../git');
+import {isString, mapValues, omit, remove, template} from 'lodash-es';
+import micromatch from 'micromatch';
+import {getBranches} from '../git.js';
 
-module.exports = async (repositoryUrl, {cwd}, branches) => {
+export default async (repositoryUrl, {cwd}, branches) => {
   const gitBranches = await getBranches(repositoryUrl, {cwd});
 
   return branches.reduce(
@@ -15,4 +15,4 @@ module.exports = async (repositoryUrl, {cwd}, branches) => {
     ],
     []
   );
-};
+}

lib/branches/get-tags.js

@@ -1,10 +1,13 @@
-const {template, escapeRegExp} = require('lodash');
-const semver = require('semver');
-const pReduce = require('p-reduce');
-const debug = require('debug')('semantic-release:get-tags');
-const {getTags, getNote} = require('../../lib/git');
+import {escapeRegExp, template} from 'lodash-es';
+import semver from 'semver';
+import pReduce from 'p-reduce';
+import debugTags from 'debug';
+import {getNote, getTags} from '../../lib/git.js';
 
-module.exports = async ({cwd, env, options: {tagFormat}}, branches) => {
+const debug = debugTags('semantic-release:get-tags');
+
+
+export default async ({cwd, env, options: {tagFormat}}, branches) => {
   // Generate a regex to parse tags formatted with `tagFormat`
   // by replacing the `version` variable in the template by `(.+)`.
   // The `tagFormat` is compiled with space as the `version` as it's an invalid tag character,
@@ -30,4 +33,4 @@ module.exports = async ({cwd, env, options: {tagFormat}}, branches) => {
     },
     []
   );
-};
+}

lib/branches/index.js

@@ -1,14 +1,14 @@
-const {isString, isRegExp} = require('lodash');
-const AggregateError = require('aggregate-error');
-const pEachSeries = require('p-each-series');
-const DEFINITIONS = require('../definitions/branches');
-const getError = require('../get-error');
-const {fetch, fetchNotes, verifyBranchName} = require('../git');
-const expand = require('./expand');
-const getTags = require('./get-tags');
-const normalize = require('./normalize');
+import {isRegExp, isString} from 'lodash-es';
+import AggregateError from 'aggregate-error';
+import pEachSeries from 'p-each-series';
+import * as DEFINITIONS from '../definitions/branches.js';
+import getError from '../get-error.js';
+import {fetch, fetchNotes, verifyBranchName} from '../git.js';
+import expand from './expand.js';
+import getTags from './get-tags.js';
+import * as normalize from './normalize.js';
 
-module.exports = async (repositoryUrl, ciBranch, context) => {
+export default async (repositoryUrl, ciBranch, context) => {
   const {cwd, env} = context;
 
   const remoteBranches = await expand(
@@ -68,4 +68,4 @@ module.exports = async (repositoryUrl, ciBranch, context) => {
   }
 
   return [...result.maintenance, ...result.release, ...result.prerelease];
-};
+}

lib/branches/normalize.js

@@ -1,19 +1,18 @@
-const {sortBy, isNil} = require('lodash');
-const semverDiff = require('semver-diff');
-const {FIRST_RELEASE, RELEASE_TYPE} = require('../definitions/constants');
-const {
-  tagsToVersions,
-  isMajorRange,
-  getUpperBound,
-  getLowerBound,
-  highest,
-  lowest,
-  getLatestVersion,
+import {isNil, sortBy} from 'lodash-es';
+import semverDiff from 'semver-diff';
+import {FIRST_RELEASE, RELEASE_TYPE} from '../definitions/constants.js';
+import {
   getFirstVersion,
-  getRange,
-} = require('../utils');
+  getLatestVersion,
+  getLowerBound, getRange,
+  getUpperBound,
+  highest,
+  isMajorRange,
+  lowest,
+  tagsToVersions
+} from '../utils.js';
 
-function maintenance({maintenance, release}) {
+export function maintenance({maintenance, release}) {
   return sortBy(
     maintenance.map(({name, range, channel, ...rest}) => ({
       ...rest,
@@ -55,7 +54,7 @@ function maintenance({maintenance, release}) {
   });
 }
 
-function release({release}) {
+export function release({release}) {
   if (release.length === 0) {
     return release;
   }
@@ -89,7 +88,7 @@ function release({release}) {
   });
 }
 
-function prerelease({prerelease}) {
+export function prerelease({prerelease}) {
   return prerelease.map(({name, prerelease, channel, tags, ...rest}) => {
     const preid = prerelease === true ? name : prerelease;
     return {
@@ -102,5 +101,3 @@ function prerelease({prerelease}) {
     };
   });
 }
-
-module.exports = {maintenance, release, prerelease};