add support for esm named exports

.travis.yml

@@ -2,6 +2,7 @@ language: node_js
 
 node_js:
   - node
+  - 14
   - 12
   - 10
 

esm-wrapper.mjs

@@ -0,0 +1,50 @@
+import semver from './index.js'
+
+export const {
+  re,
+  src,
+  tokens,
+  SEMVER_SPEC_VERSION,
+  SemVer,
+  compareIdentifiers,
+  rcompareIdentifiers,
+  parse,
+  valid,
+  clean,
+  inc,
+  diff,
+  major,
+  minor,
+  patch,
+  prerelease,
+  compare,
+  rcompare,
+  compareLoose,
+  compareBuild,
+  sort,
+  rsort,
+  gt,
+  lt,
+  eq,
+  neq,
+  gte,
+  lte,
+  cmp,
+  coerce,
+  Comparator,
+  Range,
+  satisfies,
+  toComparators,
+  maxSatisfying,
+  minSatisfying,
+  minVersion,
+  validRange,
+  outside,
+  gtr,
+  ltr,
+  intersects,
+  simplifyRange,
+  subset
+} = semver;
+
+export default semver

map.js

@@ -1 +1,4 @@
-module.exports = testFile => testFile.replace(/test\//, '')
+module.exports = testFile => {
+  const base = testFile.replace(/test\//, '').replace(/\.m?js$/, '')
+  return [`${base}.js`, `${base}.mjs`]
+}

package.json

@@ -3,6 +3,28 @@
   "version": "7.3.5",
   "description": "The semantic version parser used by npm.",
   "main": "index.js",
+  "exports": {
+    ".": {
+      "require": "./index.js",
+      "import": "./esm-wrapper.mjs"
+    },
+    "./bin/*": "./bin/*",
+    "./classes/*": "./classes/*",
+    "./functions/*": "./functions/*",
+    "./internal/*": "./internal/*",
+    "./ranges/*": "./ranges/*",
+    "./bin/": "./bin/",
+    "./classes/": "./classes/",
+    "./functions/": "./functions/",
+    "./internal/": "./internal/",
+    "./ranges/": "./ranges/",
+    "./index.js": "./index.js",
+    "./index": "./index.js",
+    "./preload.js": "./preload.js",
+    "./preload": "./preload.js",
+    "./package.json": "./package.json",
+    "./package": "./package.json"
+  },
   "scripts": {
     "test": "tap",
     "snap": "tap",
@@ -30,7 +52,8 @@
   ],
   "tap": {
     "check-coverage": true,
-    "coverage-map": "map.js"
+    "coverage-map": "map.js",
+    "test-ignore": "test/esm-wrapper.mjs"
   },
   "engines": {
     "node": ">=10"

test/esm-wrapper.mjs

@@ -0,0 +1,12 @@
+// test/esm/test-exports.mjs
+import {createRequire} from 'module'
+import t from 'tap'
+
+import * as semver from 'semver'
+
+const require = createRequire(import.meta.url)
+
+const cjs = require('semver')
+
+t.equal(cjs, semver.default)
+t.same(cjs, Object.fromEntries(Object.entries(semver).filter(nvp => nvp[0] !== 'default')))

test/index.js

@@ -9,3 +9,7 @@ t.match(Object.getOwnPropertyDescriptor(semver, 'SEMVER_SPEC_VERSION'), {
   configurable: true,
   enumerable: true
 }, 'just a normal value property')
+
+if (semver.gte(process.version, '14.0.0')) {
+  t.spawn(process.execPath, require.resolve('./esm-wrapper.mjs'))
+}