1 files changed, 55 insertions, 0 deletions
diff --git a/cli/js/ops/compiler.ts b/cli/js/ops/compiler.ts
new file mode 100644
index 000000000..b45ad42b2
--- /dev/null
+++ b/cli/js/ops/compiler.ts
@@ -0,0 +1,55 @@
+// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
+
+import { sendAsync, sendSync } from "./dispatch_json.ts";
+import { TextDecoder, TextEncoder } from "../web/text_encoding.ts";
+import { core } from "../core.ts";
+
+/** Ops to Rust to resolve modules' URLs. */
+export function resolveModules(
+  specifiers: string[],
+  referrer?: string
+): string[] {
+  return sendSync("op_resolve_modules", { specifiers, referrer });
+}
+
+/** Ops to Rust to fetch modules meta data. */
+export function fetchSourceFiles(
+  specifiers: string[],
+  referrer?: string
+): Promise<
+  Array<{
+    url: string;
+    filename: string;
+    mediaType: number;
+    sourceCode: string;
+  }>
+> {
+  return sendAsync("op_fetch_source_files", {
+    specifiers,
+    referrer
+  });
+}
+
+const encoder = new TextEncoder();
+const decoder = new TextDecoder();
+
+/** This op is also used during snapshotting */
+export function getAsset(name: string): string {
+  const opId = core.ops()["op_fetch_asset"];
+  // We really don't want to depend on JSON dispatch during snapshotting, so
+  // this op exchanges strings with Rust as raw byte arrays.
+  const sourceCodeBytes = core.dispatch(opId, encoder.encode(name));
+  return decoder.decode(sourceCodeBytes!);
+}
+
+export function cache(
+  extension: string,
+  moduleId: string,
+  contents: string
+): void {
+  sendSync("op_cache", {
+    extension,
+    moduleId,
+    contents
+  });
+}