4 files changed, 6 insertions, 12 deletions
diff --git a/cli/js/ops/fs/stat.ts b/cli/js/ops/fs/stat.ts
index 7f28614d2..c3563a8c4 100644
--- a/cli/js/ops/fs/stat.ts
+++ b/cli/js/ops/fs/stat.ts
@@ -45,7 +45,7 @@ export interface StatResponse {
 
 // @internal
 export function parseFileInfo(response: StatResponse): FileInfo {
-  const isUnix = build.os === "mac" || build.os === "linux";
+  const isUnix = build.os === "darwin" || build.os === "linux";
   return {
     isFile: response.isFile,
     isDirectory: response.isDirectory,
diff --git a/cli/js/ops/fs/symlink.ts b/cli/js/ops/fs/symlink.ts
index 4f9c85f7b..64074ec2d 100644
--- a/cli/js/ops/fs/symlink.ts
+++ b/cli/js/ops/fs/symlink.ts
@@ -8,7 +8,7 @@ export function symlinkSync(
   newpath: string,
   type?: string
 ): void {
-  if (build.os === "win" && type) {
+  if (build.os === "windows" && type) {
     return util.notImplemented();
   }
   sendSync("op_symlink", { oldpath, newpath });
@@ -19,7 +19,7 @@ export async function symlink(
   newpath: string,
   type?: string
 ): Promise<void> {
-  if (build.os === "win" && type) {
+  if (build.os === "windows" && type) {
     return util.notImplemented();
   }
   await sendAsync("op_symlink", { oldpath, newpath });
diff --git a/cli/js/ops/process.ts b/cli/js/ops/process.ts
index fcfa7b9f5..4fba4d2de 100644
--- a/cli/js/ops/process.ts
+++ b/cli/js/ops/process.ts
@@ -4,7 +4,7 @@ import { assert } from "../util.ts";
 import { build } from "../build.ts";
 
 export function kill(pid: number, signo: number): void {
-  if (build.os === "win") {
+  if (build.os === "windows") {
     throw new Error("Not yet implemented");
   }
   sendSync("op_kill", { pid, signo });
diff --git a/cli/js/ops/runtime.ts b/cli/js/ops/runtime.ts
index 262e46231..247f0576d 100644
--- a/cli/js/ops/runtime.ts
+++ b/cli/js/ops/runtime.ts
@@ -2,11 +2,6 @@
 
 import { sendSync } from "./dispatch_json.ts";
 
-// TODO(bartlomieju): these two types are duplicated
-// in `cli/js/build.ts` - deduplicate
-export type OperatingSystem = "mac" | "win" | "linux";
-export type Arch = "x64" | "arm64";
-
 export interface Start {
   cwd: string;
   pid: number;
@@ -21,11 +16,10 @@ export interface Start {
   v8Version: string;
   tsVersion: string;
   noColor: boolean;
-  os: OperatingSystem;
-  arch: Arch;
+  target: string;
 }
 
-export function start(): Start {
+export function opStart(): Start {
   return sendSync("op_start");
 }