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/** Returns the path to the user's home directory. * * The returned value depends on the operating system and is either a string, * containing a value from the following table, or `null`. * * |Platform | Value                                    | Example                | * | ------- | -----------------------------------------| -----------------------| * | Linux   | `$HOME`                                  | /home/justjavac        | * | macOS   | `$HOME`                                  | /Users/justjavac       | * | Windows | `$USERPROFILE`                          | C:\Users\justjavac     | */export default function home_dir(): string | null {  switch (Deno.build.os) {    case "linux":    case "darwin":      return Deno.env.get("HOME") ?? null;    case "windows":      return Deno.env.get("USERPROFILE") ?? null;  }}