Add transpileOnly support for TS projects if needed

src/cli.js

@@ -27,6 +27,7 @@ Options:
   -e, --external [mod]     Skip bundling 'mod'. Can be used many times
   -q, --quiet              Disable build summaries / non-error outputs
   -w, --watch              Start a watched build
+  -t, --transpile-only     Use transpileOnly option with the ts-loader
   --v8-cache               Emit a build using the v8 compile cache
 `;
 
@@ -135,7 +136,9 @@ async function runCmd (argv, stdout, stderr) {
       "-q": "--quiet",
       "--watch": Boolean,
       "-w": "--watch",
-      "--v8-cache": Boolean
+      "--v8-cache": Boolean,
+      "--transpile-only": Boolean,
+      "-t": "--transpile-only",
     }, {
       permissive: false,
       argv
@@ -223,6 +226,7 @@ async function runCmd (argv, stdout, stderr) {
           cache: args["--no-cache"] ? false : undefined,
           watch: args["--watch"],
           v8cache: args["--v8-cache"],
+          transpileOnly: args["--transpile-only"],
           quiet
         }
       );

src/index.js

@@ -45,7 +45,8 @@ module.exports = (
     v8cache = false,
     filterAssetBase = process.cwd(),
     quiet = false,
-    debugLog = false
+    debugLog = false,
+    transpileOnly = false
   } = {}
 ) => {
   if (!quiet) {
@@ -177,6 +178,7 @@ module.exports = (
           {
             loader: eval('__dirname + "/loaders/ts-loader.js"'),
             options: {
+              transpileOnly,
               compiler: eval('__dirname + "/typescript.js"'),
               compilerOptions: {
                 outDir: '//',

test/cli.js

@@ -47,5 +47,9 @@
     expect (code, stdout, stderr) {
       return code === 1 && stderr.toString().indexOf('ts-error.ts(3,16)') !== -1 && stderr.toString().split('\n').length < 10;
     }
+  },
+  {
+    args: ["run", "-t", "test/fixtures/with-type-errors/ts-error.ts"],
+    expect: { code: 0 }
   }
 ]

test/fixtures/with-type-errors/ts-error.ts

@@ -0,0 +1,5 @@
+require.extensions['.asdf'] = function () {};
+
+function p (x: Y) {
+
+}

test/fixtures/with-type-errors/tsconfig.json

@@ -0,0 +1,5 @@
+{
+  "compilerOptions": {
+    "target": "es2015"
+  }
+}