Make some renames in js/build.ts (#1912)

* Replace Deno.OSType enum with Deno.OperatingSystem type alias

* Add arm64 to supported CPU architectures

* add type alias for cpu arch Deno.Arch

2 files changed, 11 insertions, 14 deletions

diff --git a/js/build.ts b/js/build.ts
index e883cdba0..6866e42a2 100644
--- a/js/build.ts
+++ b/js/build.ts
@@ -1,33 +1,30 @@
 // Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
 
+export type OperatingSystem = "mac" | "win" | "linux";
+
+export type Arch = "x64" | "arm64";
+
 // Do not add unsupported platforms.
 /** Build related information */
 export interface BuildInfo {
-  /** The operating system CPU architecture. */
-  arch: "x64";
+  /** The CPU architecture. */
+  arch: Arch;
 
-  /** The operating system platform. */
-  os: OSType;
+  /** The operating system. */
+  os: OperatingSystem;
 
   /** The arguments passed to GN during build. See `gn help buildargs`. */
   args: string;
 }
 
-/** The operating system platform. */
-export enum OSType {
-  mac = "mac",
-  win = "win",
-  linux = "linux"
-}
-
 // 'build' is injected by rollup.config.js at compile time.
 export const build: BuildInfo = {
-  /* eslint-disable @typescript-eslint/no-explicit-any */
   // These string will be replaced by rollup
+  /* eslint-disable-next-line @typescript-eslint/no-explicit-any */
   arch: `ROLLUP_REPLACE_ARCH` as any,
+  /* eslint-disable-next-line @typescript-eslint/no-explicit-any */
   os: `ROLLUP_REPLACE_OS` as any,
   args: `ROLLUP_REPLACE_GN_ARGS`
-  /* eslint-enable @typescript-eslint/no-explicit-any */
 };
 
 // TODO(kevinkassimo): deprecate Deno.platform
diff --git a/js/deno.ts b/js/deno.ts
index a9f5f2018..d663ca55c 100644
--- a/js/deno.ts
+++ b/js/deno.ts
@@ -63,7 +63,7 @@ export { metrics, Metrics } from "./metrics";
 export { resources } from "./resources";
 export { run, RunOptions, Process, ProcessStatus } from "./process";
 export { inspect } from "./console";
-export { build, platform, OSType } from "./build";
+export { build, platform, OperatingSystem, Arch } from "./build";
 export { version } from "./version";
 export const args: string[] = [];