Add ES module exports + set type in package.json (Fixes #138)

package.json

@@ -16,8 +16,10 @@
     "dist/",
     "types/",
     "*.js",
+    "*.mjs",
     "!.*.js"
   ],
+  "type": "commonjs",
   "main": "./index.js",
   "browser": {
     "./index.js": "./browser/index.js",
@@ -35,6 +37,18 @@
     "./types/timestamp.js": "./browser/types/timestamp.js",
     "./util.js": "./browser/util.js"
   },
+  "exports": {
+    ".": "./index.js",
+    "./parse-cst": "./parse-cst.js",
+    "./types": {
+      "require": "./types.js",
+      "import": "./types.mjs"
+    },
+    "./util": {
+      "require": "./util.js",
+      "import": "./util.mjs"
+    }
+  },
   "scripts": {
     "browser:build": "BABEL_ENV=browser babel src/ --out-dir browser/dist/",
     "browser:copy": "cpy '*.js' '!*.config.js' types/ browser/ --parents",

types.mjs

@@ -0,0 +1,20 @@
+import opt from './dist/tags/options.js'
+export const binaryOptions = opt.binaryOptions
+export const boolOptions = opt.boolOptions
+export const nullOptions = opt.nullOptions
+export const strOptions = opt.strOptions
+
+import schema from './dist/schema/index.js'
+export const Schema = schema.default
+
+import map from './dist/schema/Map.js'
+export const YAMLMap = map.default
+
+import seq from './dist/schema/Seq.js'
+export const YAMLSeq = seq.default
+
+import pair from './dist/schema/Pair.js'
+export const Pair = pair.default
+
+import scalar from './dist/schema/Scalar.js'
+export const Scalar = scalar.default

util.mjs

@@ -0,0 +1,24 @@
+import map from './dist/schema/Map.js'
+export const findPair = map.findPair
+
+import parseMapPkg from './dist/schema/parseMap.js'
+export const parseMap = parseMapPkg.default
+
+import parseSeqPkg from './dist/schema/parseSeq.js'
+export const parseSeq = parseSeqPkg.default
+
+import str from './dist/stringify.js'
+export const stringifyNumber = str.stringifyNumber
+export const stringifyString = str.stringifyString
+
+import toJsonPkg from './dist/toJSON.js'
+export const toJSON = toJsonPkg.default
+
+import constants from './dist/constants.js'
+export const Type = constants.Type
+
+import err from './dist/errors.js'
+export const YAMLReferenceError = err.YAMLReferenceError
+export const YAMLSemanticError = err.YAMLSemanticError
+export const YAMLSyntaxError = err.YAMLSyntaxError
+export const YAMLWarning = err.YAMLWarning