1 files changed, 58 insertions, 0 deletions

diff --git a/src/compile.js b/src/compile.js
new file mode 100644
index 0000000..8b5d87f
--- /dev/null
+++ b/src/compile.js
@@ -0,0 +1,58 @@
+'use strict';
+
+const Promise = require('bluebird');
+
+const spawn = require('cross-spawn');
+
+const debug = require('debug')('purs-loader');
+
+const dargs = require('./dargs');
+
+module.exports = function compile(psModule) {
+  const options = psModule.options
+
+  const cache = psModule.cache
+
+  const stderr = []
+
+  const compileCommand = options.psc || 'purs';
+
+  const compileArgs = (options.psc ? [] : [ 'compile' ]).concat(dargs(Object.assign({
+    _: options.src,
+    output: options.output,
+  }, options.pscArgs)))
+
+  debug('spawning compiler %s %o', compileCommand, compileArgs)
+
+  return new Promise((resolve, reject) => {
+    debug('compiling PureScript...')
+
+    const compilation = spawn(compileCommand, compileArgs)
+
+    compilation.stderr.on('data', data => {
+      stderr.push(data.toString());
+    });
+
+    compilation.on('close', code => {
+      debug('finished compiling PureScript.')
+      if (code !== 0) {
+        const errorMessage = stderr.join('');
+        if (errorMessage.length) {
+          psModule.emitError(errorMessage);
+        }
+        if (options.watch) {
+          resolve(psModule);
+        }
+        else {
+          reject(new Error('compilation failed'))
+        }
+      } else {
+        const warningMessage = stderr.join('');
+        if (options.warnings && warningMessage.length) {
+          psModule.emitWarning(warningMessage);
+        }
+        resolve(psModule)
+      }
+    })
+  });
+};