From df8798fa0eeeb3dfcce14dc10100b03f708b57f6 Mon Sep 17 00:00:00 2001
From: eric thul <thul.eric@gmail.com>
Date: Sun, 19 Feb 2017 11:29:57 -0500
Subject: Add a watch option

Similar to the way psc-ide support works, the purs-loader now tolerates
compiler errors when the `watch` option is true. When webpack is being
run in watch mode the user can set `watch` to true in order to avoid
failing the webpack bundle creation when the PureScript compiler fails.

Resolves issue #66

Resolves issue #73

Resolves issue #74
---
 README.md    | 1 +
 src/Psc.js   | 7 ++++++-
 src/index.js | 1 +
 3 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 3b31354..931e4e6 100644
--- a/README.md
+++ b/README.md
@@ -61,6 +61,7 @@ const loaderConfig = {
   bundleNamespace: 'PS',
   bundle: false,
   warnings: true,
+  watch: false, // indicates if webapck is in watch mode
   output: 'output',
   src: [
     path.join('src', '**', '*.purs'),
diff --git a/src/Psc.js b/src/Psc.js
index 4991d5f..ffa32b7 100644
--- a/src/Psc.js
+++ b/src/Psc.js
@@ -45,7 +45,12 @@ function compile(psModule) {
         if (errorMessage.length) {
           psModule.emitError(errorMessage);
         }
-        reject(new Error('compilation failed'))
+        if (options.watch) {
+          resolve(psModule);
+        }
+        else {
+          reject(new Error('compilation failed'))
+        }
       } else {
         const warningMessage = stderr.join('');
         if (options.warnings && warningMessage.length) {
diff --git a/src/index.js b/src/index.js
index 3f5e6a8..f4a6dff 100644
--- a/src/index.js
+++ b/src/index.js
@@ -46,6 +46,7 @@ module.exports = function purescriptLoader(source, map) {
     bundleNamespace: 'PS',
     bundle: false,
     warnings: true,
+    watch: false,
     output: 'output',
     src: [
       path.join('src', '**', '*.purs'),
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