fix(typescript): correctly process diagnostics in worker mode (#3441)

Author: thesayyn

packages/typescript/internal/worker/index.js

@@ -57,7 +57,8 @@ function emitOnce(args) {
 consolidateChangesCallback();
 }
 workerRequestTimestamp=Date.now();
-constresult=yield(watchProgram===null||watchProgram===void0 ? void0 : watchProgram.getProgram().emit(undefined,undefined,{
+constprogram=watchProgram===null||watchProgram===void0 ? void0 : watchProgram.getProgram();
+constcancellationToken={
 isCancellationRequested: function(timestamp){
 returntimestamp!==workerRequestTimestamp;
 }.bind(null,workerRequestTimestamp),
@@ -66,8 +67,11 @@ function emitOnce(args) {
 thrownewts.OperationCanceledException();
 }
 }.bind(null,workerRequestTimestamp),
-}));
-returnBoolean(result&&result.diagnostics.length===0);
+};
+constresult=program.emit(undefined,undefined,cancellationToken);
+constdiagnostics=ts.getPreEmitDiagnostics(program,undefined,cancellationToken);
+letsucceded=result&&result.diagnostics.length===0&&diagnostics.length==0;
+returnsucceded;
 });
 }
 functionmain(){

packages/typescript/internal/worker/worker_adapter.ts

@@ -99,9 +99,9 @@ async function emitOnce(args: string[]) {
 consolidateChangesCallback();
 }
 
-
 workerRequestTimestamp=Date.now();
-constresult=awaitwatchProgram?.getProgram().emit(undefined,undefined,{
+constprogram=watchProgram?.getProgram()
+constcancellationToken: ts.CancellationToken={
 isCancellationRequested: function(timestamp: number){
 returntimestamp!==workerRequestTimestamp;
 }.bind(null,workerRequestTimestamp),
@@ -110,9 +110,12 @@ async function emitOnce(args: string[]) {
 thrownewts.OperationCanceledException();
 }
 }.bind(null,workerRequestTimestamp),
-});
-
-returnBoolean(result&&result.diagnostics.length===0);
+}
+
+constresult=program.emit(undefined,undefined,cancellationToken);
+constdiagnostics=ts.getPreEmitDiagnostics(programasunknownasts.Program,undefined,cancellationToken)
+letsucceded=result&&result.diagnostics.length===0&&diagnostics.length==0
+returnsucceded
 }
 
 functionmain(){