Improve support for diagnostics from runtime compiler APIs (#3911)

- Exports diagnostic items from `diagnostics.ts` which are missing at
  runtime.
- Returns an array of diagnostics, instead of an object with a property
  of `items`.  This is because of the way Rust deals with certain
  structures, and shouldn't be exposed in the APIs.

1 files changed, 3 insertions, 3 deletions

diff --git a/cli/js/compiler_api.ts b/cli/js/compiler_api.ts
index dc81f34ab..489f3693b 100644
--- a/cli/js/compiler_api.ts
+++ b/cli/js/compiler_api.ts
@@ -3,7 +3,7 @@
 // This file contains the runtime APIs which will dispatch work to the internal
 // compiler within Deno.
 
-import { Diagnostic } from "./diagnostics.ts";
+import { DiagnosticItem } from "./diagnostics.ts";
 import * as dispatch from "./dispatch.ts";
 import { sendAsync } from "./dispatch_json.ts";
 import * as util from "./util.ts";
@@ -328,7 +328,7 @@ export function compile(
   rootName: string,
   sources?: Record<string, string>,
   options?: CompilerOptions
-): Promise<[Diagnostic | undefined, Record<string, string>]> {
+): Promise<[DiagnosticItem[] | undefined, Record<string, string>]> {
   const payload = {
     rootName: sources ? rootName : checkRelative(rootName),
     sources,
@@ -377,7 +377,7 @@ export function bundle(
   rootName: string,
   sources?: Record<string, string>,
   options?: CompilerOptions
-): Promise<[Diagnostic | undefined, string]> {
+): Promise<[DiagnosticItem[] | undefined, string]> {
   const payload = {
     rootName: sources ? rootName : checkRelative(rootName),
     sources,