fix: handle errors w/o file information.

TypeScript errors do not always include file information, e.g. for global errors triggered by incorrect compiler options.

Author: mprobst

tools/broccoli/broccoli-typescript.ts

@@ -137,10 +137,13 @@ class DiffingTSCompiler implements DiffingBroccoliPlugin {
  let errorMessages = [];
 
  allDiagnostics.forEach(diagnostic => {
- var {line, character} = diagnostic.file.getLineAndCharacterOfPosition(diagnostic.start);
+ var pos = '';
+ if (diagnostic.file) {
+ var {line, character} = diagnostic.file.getLineAndCharacterOfPosition(diagnostic.start);
+ pos = `${diagnostic.file.fileName} (${line + 1}, ${character + 1}): `
+ }
  var message = ts.flattenDiagnosticMessageText(diagnostic.messageText, '\n');
- errorMessages.push(
- ` ${diagnostic.file.fileName} (${line + 1},${character + 1}): ${message}`);
+ errorMessages.push(` ${pos}${message}`);
  });
 
  if (errorMessages.length) {