refactor(*): code review changes

Author: andrewbrey

README.md

@@ -250,7 +250,7 @@ console.log(`Hello from ${$.blue.bold("worker")}!`);
 ## Variables
 
 - **$.shell:** Set the shell that is used by `` $`command` ``. Default:
-  `/bin/sh`
+  `/bin/bash`
 - **$.prefix:** Command prefix. Default: `set -euo pipefail;`.
 - **$.mainModule:** The executed dzx script.
 - **$.verbose:** Enable debugging output (log shell commands and execution

src/runtime/mod.ts

@@ -6,7 +6,7 @@ import { quote } from "./quote.ts";
 export { ProcessError } from "./process_error.ts";
 export { ProcessOutput } from "./process_output.ts";
 
-export type $Global = typeof exec & typeof colors & {
+export type $ = typeof exec & typeof colors & {
   shell: string;
   prefix: string;
   mainModule: string;
@@ -20,13 +20,13 @@ export type $Global = typeof exec & typeof colors & {
   time: number;
 };
 
-export const $: $Global = exec as $Global;
+export const $: $ = exec as $;
 
 Object.setPrototypeOf($, Object.getPrototypeOf(colors));
 
 $._stack = [];
-$.shell = "/bin/sh";
-$.prefix = "set -eu;";
+$.shell = "/bin/bash";
+$.prefix = "set -euo pipefail;";
 $.mainModule = "";
 $.verbose = false;
 $.stdout = "piped";

types.d.ts

@@ -1,5 +1,5 @@
 import type {
-  $Global,
+  $,
   async as _async,
   cd as _cd,
   flags as _flags,
@@ -25,7 +25,7 @@ import type {
 
 declare global {
   // dzx
-  const $: $Global;
+  const $: $;
   const cd: typeof _cd;
   const quote: typeof _quote;
 
@@ -64,7 +64,7 @@ declare global {
 
   interface Window {
     // dzx
-    $: $Global;
+    $: $;
     cd: typeof _cd;
     quote: typeof _quote;
 
@@ -79,7 +79,7 @@ declare global {
 
   interface WorkerGlobalScope {
     // dzx
-    $: $Global;
+    $: $;
     cd: typeof _cd;
     quote: typeof _quote;