Port internal TS code to JS (#6793)

Co-authored-by: Ryan Dahl <ry@tinyclouds.org>

1 files changed, 26 insertions, 0 deletions

diff --git a/cli/js2/01_build.js b/cli/js2/01_build.js
new file mode 100644
index 000000000..7c1dc817e
--- /dev/null
+++ b/cli/js2/01_build.js
@@ -0,0 +1,26 @@
+// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
+
+((window) => {
+  const build = {
+    target: "unknown",
+    arch: "unknown",
+    os: "unknown",
+    vendor: "unknown",
+    env: undefined,
+  };
+
+  function setBuildInfo(target) {
+    const [arch, vendor, os, env] = target.split("-", 4);
+    build.target = target;
+    build.arch = arch;
+    build.vendor = vendor;
+    build.os = os;
+    build.env = env;
+    Object.freeze(build);
+  }
+
+  window.__bootstrap.build = {
+    build,
+    setBuildInfo,
+  };
+})(this);