refactor: move definition of Deno.build from "runtime" to "core" (#18036)

We use information about build in several extension crates like
"ext/node" or "runtime/". In an effort to move "fs" APIs to a separate 
crate it is a prerequisite to have this information available outside 
of the "runtime/" crate.

This commit moves definition of "build" object to "Deno.core" that is 
later forwarded to "Deno.build".

1 files changed, 38 insertions, 12 deletions

diff --git a/core/01_core.js b/core/01_core.js
index 5a622b0ea..07ab758f1 100644
--- a/core/01_core.js
+++ b/core/01_core.js
@@ -3,33 +3,57 @@
 
 ((window) => {
   const {
-    Error,
-    RangeError,
-    ReferenceError,
-    SyntaxError,
-    TypeError,
-    URIError,
     Array,
     ArrayPrototypeFill,
-    ArrayPrototypePush,
     ArrayPrototypeMap,
+    ArrayPrototypePush,
+    Error,
     ErrorCaptureStackTrace,
-    Promise,
-    ObjectAssign,
-    ObjectFromEntries,
     Map,
+    MapPrototypeDelete,
     MapPrototypeGet,
     MapPrototypeHas,
-    MapPrototypeDelete,
     MapPrototypeSet,
+    ObjectAssign,
+    ObjectFreeze,
+    ObjectFromEntries,
+    Promise,
     PromisePrototypeThen,
+    RangeError,
+    ReferenceError,
     SafePromisePrototypeFinally,
+    setQueueMicrotask,
     StringPrototypeSlice,
+    StringPrototypeSplit,
     SymbolFor,
-    setQueueMicrotask,
+    SyntaxError,
+    TypeError,
+    URIError,
   } = window.__bootstrap.primordials;
   const { ops } = window.Deno.core;
 
+  const build = {
+    target: "unknown",
+    arch: "unknown",
+    os: "unknown",
+    vendor: "unknown",
+    env: undefined,
+  };
+
+  function setBuildInfo(target) {
+    const { 0: arch, 1: vendor, 2: os, 3: env } = StringPrototypeSplit(
+      target,
+      "-",
+      4,
+    );
+    build.target = target;
+    build.arch = arch;
+    build.vendor = vendor;
+    build.os = os;
+    build.env = env;
+    ObjectFreeze(build);
+  }
+
   const errorMap = {};
   // Builtin v8 / JS errors
   registerErrorClass("Error", Error);
@@ -408,6 +432,8 @@
     eventLoopHasMoreWork: () => ops.op_event_loop_has_more_work(),
     setPromiseRejectCallback: (fn) => ops.op_set_promise_reject_callback(fn),
     byteLength: (str) => ops.op_str_byte_length(str),
+    build,
+    setBuildInfo,
   });
 
   ObjectAssign(globalThis.__bootstrap, { core });