Fix 'unreadable file error' in watch mode after a save in vscode

lib/render.js

@@ -42,11 +42,13 @@ module.exports = function(options, emitter) {
  renderOptions.file = options.src;
  }
 
+ var retries = 0;
  var sourceMap = options.sourceMap;
  var destination = options.dest;
  var stdin = options.stdin;
 
  var success = function(result) {
+ retries = 0;
  var todo = 1;
  var done = function() {
  if (--todo <= 0) {
@@ -105,7 +107,28 @@ module.exports = function(options, emitter) {
  };
 
  var error = function(error) {
- emitter.emit('error', chalk.red(JSON.stringify(error, null, 2)));
+ if (isFileUnreadable(error) && retries < 1000) {
+ retries++;
+ sass.render(renderOptions, renderCallback);
+ }
+ else {
+ emitter.emit('error', chalk.red(JSON.stringify(error, null, 2)));
+ }
+ };
+
+ var isFileUnreadable = function(error) {
+ var unreadable = typeof error.message === 'string' &&
+ (
+ error.message.startsWith('File to read not found or unreadable: ') ||
+ error.message.startsWith('File to import not found or unreadable: ')
+ );
+
+ if (unreadable) {
+ var file = error.message.split('not found or unreadable: ')[1].trim();
+ return fs.existsSync(file);
+ }
+
+ return false;
  };
 
  var renderCallback = function(err, result) {