1 files changed, 224 insertions, 0 deletions
diff --git a/std/node/_os.ts b/std/node/_os.ts
new file mode 100644
index 000000000..773cca8bd
--- /dev/null
+++ b/std/node/_os.ts
@@ -0,0 +1,224 @@
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+import { notImplemented } from "./_utils.ts";
+import { validateIntegerRange } from "./_utils.ts";
+import { EOL as fsEOL } from "../fs/eol.ts";
+import process from "./process.ts";
+
+const SEE_GITHUB_ISSUE = "See https://github.com/denoland/deno/issues/3802";
+
+interface CPUTimes {
+  /** The number of milliseconds the CPU has spent in user mode */
+  user: number;
+
+  /** The number of milliseconds the CPU has spent in nice mode */
+  nice: number;
+
+  /** The number of milliseconds the CPU has spent in sys mode */
+  sys: number;
+
+  /** The number of milliseconds the CPU has spent in idle mode */
+  idle: number;
+
+  /** The number of milliseconds the CPU has spent in irq mode */
+  irq: number;
+}
+
+interface CPUCoreInfo {
+  model: string;
+
+  /** in MHz */
+  speed: number;
+
+  times: CPUTimes;
+}
+
+interface NetworkAddress {
+  /** The assigned IPv4 or IPv6 address */
+  address: string;
+
+  /** The IPv4 or IPv6 network mask */
+  netmask: string;
+
+  family: "IPv4" | "IPv6";
+
+  /** The MAC address of the network interface */
+  mac: string;
+
+  /** true if the network interface is a loopback or similar interface that is not remotely accessible; otherwise false */
+  internal: boolean;
+
+  /** The numeric IPv6 scope ID (only specified when family is IPv6) */
+  scopeid?: number;
+
+  /** The assigned IPv4 or IPv6 address with the routing prefix in CIDR notation. If the netmask is invalid, this property is set to null. */
+  cidr: string;
+}
+
+interface NetworkInterfaces {
+  [key: string]: NetworkAddress[];
+}
+
+export interface UserInfoOptions {
+  encoding: string;
+}
+
+interface UserInfo {
+  username: string;
+  uid: number;
+  gid: number;
+  shell: string;
+  homedir: string;
+}
+
+arch[Symbol.toPrimitive] = (): string => arch();
+endianness[Symbol.toPrimitive] = (): string => endianness();
+freemem[Symbol.toPrimitive] = (): number => freemem();
+homedir[Symbol.toPrimitive] = (): string | null => homedir();
+hostname[Symbol.toPrimitive] = (): string | null => hostname();
+platform[Symbol.toPrimitive] = (): string => platform();
+release[Symbol.toPrimitive] = (): string => release();
+totalmem[Symbol.toPrimitive] = (): number => totalmem();
+type[Symbol.toPrimitive] = (): string => type();
+uptime[Symbol.toPrimitive] = (): number => uptime();
+
+/** Returns the operating system CPU architecture for which the Deno binary was compiled */
+export function arch(): string {
+  return Deno.build.arch;
+}
+
+/** Not yet implemented */
+export function cpus(): CPUCoreInfo[] {
+  notImplemented(SEE_GITHUB_ISSUE);
+}
+
+/**
+ * Returns a string identifying the endianness of the CPU for which the Deno
+ * binary was compiled. Possible values are 'BE' for big endian and 'LE' for
+ * little endian.
+ **/
+export function endianness(): "BE" | "LE" {
+  // Source: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView#Endianness
+  const buffer = new ArrayBuffer(2);
+  new DataView(buffer).setInt16(0, 256, true /* littleEndian */);
+  // Int16Array uses the platform's endianness.
+  return new Int16Array(buffer)[0] === 256 ? "LE" : "BE";
+}
+
+/** Not yet implemented */
+export function freemem(): number {
+  notImplemented(SEE_GITHUB_ISSUE);
+}
+
+/** Not yet implemented */
+export function getPriority(pid = 0): number {
+  validateIntegerRange(pid, "pid");
+  notImplemented(SEE_GITHUB_ISSUE);
+}
+
+/** Returns the string path of the current user's home directory. */
+export function homedir(): string | null {
+  notImplemented(SEE_GITHUB_ISSUE);
+}
+
+/** Returns the host name of the operating system as a string. */
+export function hostname(): string {
+  notImplemented(SEE_GITHUB_ISSUE);
+}
+
+/** Returns an array containing the 1, 5, and 15 minute load averages */
+export function loadavg(): number[] {
+  if (Deno.build.os === "windows") {
+    return [0, 0, 0];
+  }
+  return Deno.loadavg();
+}
+
+/** Not yet implemented */
+export function networkInterfaces(): NetworkInterfaces {
+  notImplemented(SEE_GITHUB_ISSUE);
+}
+/** Returns the a string identifying the operating system platform. The value is set at compile time. Possible values are 'darwin', 'linux', and 'win32'. */
+export function platform(): string {
+  return process.platform;
+}
+
+/** Returns the operating system as a string */
+export function release(): string {
+  return Deno.osRelease();
+}
+
+/** Not yet implemented */
+export function setPriority(pid: number, priority?: number): void {
+  /* The node API has the 'pid' as the first parameter and as optional.
+       This makes for a problematic implementation in Typescript. */
+  if (priority === undefined) {
+    priority = pid;
+    pid = 0;
+  }
+  validateIntegerRange(pid, "pid");
+  validateIntegerRange(priority, "priority", -20, 19);
+
+  notImplemented(SEE_GITHUB_ISSUE);
+}
+
+/** Returns the operating system's default directory for temporary files as a string. */
+export function tmpdir(): string | null {
+  notImplemented(SEE_GITHUB_ISSUE);
+}
+
+/** Not yet implemented */
+export function totalmem(): number {
+  notImplemented(SEE_GITHUB_ISSUE);
+}
+
+/** Not yet implemented */
+export function type(): string {
+  notImplemented(SEE_GITHUB_ISSUE);
+}
+
+/** Not yet implemented */
+export function uptime(): number {
+  notImplemented(SEE_GITHUB_ISSUE);
+}
+
+/** Not yet implemented */
+export function userInfo(
+  options: UserInfoOptions = { encoding: "utf-8" },
+): UserInfo {
+  notImplemented(SEE_GITHUB_ISSUE);
+}
+
+export const constants = {
+  // UV_UDP_REUSEADDR: 4,  //see https://nodejs.org/docs/latest-v12.x/api/os.html#os_libuv_constants
+  dlopen: {
+    // see https://nodejs.org/docs/latest-v12.x/api/os.html#os_dlopen_constants
+  },
+  errno: {
+    // see https://nodejs.org/docs/latest-v12.x/api/os.html#os_error_constants
+  },
+  signals: Deno.Signal,
+  priority: {
+    // see https://nodejs.org/docs/latest-v12.x/api/os.html#os_priority_constants
+  },
+};
+
+export const EOL = Deno.build.os == "windows" ? fsEOL.CRLF : fsEOL.LF;