Provide experimental Flow and TypeScript type definitions

package.json

@@ -3,9 +3,13 @@
   "version": "0.1.5",
   "description": "Set up, format and translate phrases easily",
   "main": "dist/t8on.js",
+  "typescript": {
+    "definition": "dist/t8on.d.ts"
+  },
   "scripts": {
-    "build": "run-p build:lib build:umd",
+    "build": "run-p build:lib build:umd build:typedefs",
     "build:lib": "cross-env BABEL_ENV=cjs babel src --loose -o dist/t8on.js",
+    "build:typedefs": "node ./res/copy-typedefs.js",
     "build:umd": "webpack --config res/umd.config.js",
     "clean": "rm -rf .nyc_output coverage dist",
     "coverage": "cross-env BABEL_ENV=test nyc report --reporter=text-lcov | coveralls",

res/copy-typedefs.js

@@ -0,0 +1,11 @@
+const fs = require('fs');
+const path = require('path');
+
+const DIST_PATH = path.join(__dirname, '../dist');
+const DEFS_PATH = path.join(__dirname, '../typedefs');
+
+const flow = fs.readFileSync(path.join(DEFS_PATH, 't8on.js.flow'), 'utf-8');
+const ts = fs.readFileSync(path.join(DEFS_PATH, 't8on.d.ts'), 'utf-8');
+
+fs.writeFileSync(path.join(DIST_PATH, 't8on.js.flow'), flow, 'utf-8');
+fs.writeFileSync(path.join(DIST_PATH, 't8on.d.ts'), ts, 'utf-8');