chore: add utility for highlighting

dist/npm-to-yarn.mjs

@@ -1,3 +1,5 @@
+import { codeToHtml } from 'shiki/index.mjs';
+
 var unchangedCLICommands = [
     'test',
     'login',
@@ -615,21 +617,46 @@ function npmToBun(_m, command) {
     return "".concat(cmd, " ").concat(filtered.join(' ')).concat(cmd === 'npm' ? "\n# couldn't auto-convert command" : '').replace('=', ' ');
 }
 
+function highlight(command, theme) {
+    if (theme === void 0) { theme = "dark"; }
+    codeToHtml(command, {
+        lang: 'javascript',
+        theme: "github-".concat(theme)
+    }).then(function (html) {
+        return html;
+    });
+    return "";
+}
+
 /**
  * Converts between npm and yarn command
  */
-function convert(str, to) {
+function convert(str, to, highlighting, theme) {
+    if (highlighting === void 0) { highlighting = false; }
+    if (theme === void 0) { theme = "dark"; }
     if (to === 'npm') {
-        return str.replace(/yarn(?: +([^&\n\r]*))?/gm, yarnToNPM);
+        var convertedCommand = str.replace(/yarn(?: +([^&\n\r]*))?/gm, yarnToNPM);
+        if (highlighting)
+            return highlight(convertedCommand, theme);
+        return convertedCommand;
     }
     else if (to === 'pnpm') {
-        return str.replace(/npm(?: +([^&\n\r]*))?/gm, npmToPnpm);
+        var convertedCommand = str.replace(/npm(?: +([^&\n\r]*))?/gm, npmToPnpm);
+        if (highlighting)
+            return highlight(convertedCommand, theme);
+        return convertedCommand;
     }
     else if (to === 'bun') {
-        return str.replace(/npm(?: +([^&\n\r]*))?/gm, npmToBun);
+        var convertedCommand = str.replace(/npm(?: +([^&\n\r]*))?/gm, npmToBun);
+        if (highlighting)
+            return highlight(convertedCommand, theme);
+        return convertedCommand;
     }
     else {
-        return str.replace(/npm(?: +([^&\n\r]*))?/gm, npmToYarn);
+        var convertedCommand = str.replace(/npm(?: +([^&\n\r]*))?/gm, npmToYarn);
+        if (highlighting)
+            return highlight(convertedCommand, theme);
+        return convertedCommand;
     }
 }
 

dist/types/highlight.d.ts

@@ -0,0 +1 @@
+export declare function highlight(command: string, theme?: "light" | "dark"): string;

dist/types/index.d.ts

@@ -1,4 +1,4 @@
 /**
  * Converts between npm and yarn command
  */
-export default function convert(str: string, to: 'npm' | 'yarn' | 'pnpm' | 'bun'): string;
+export default function convert(str: string, to: 'npm' | 'yarn' | 'pnpm' | 'bun', highlighting?: boolean, theme?: "light" | "dark"): string;

src/highlight.ts

@@ -0,0 +1,12 @@
+import { codeToHtml } from "shiki/index.mjs"
+
+export function highlight (command: string, theme: "light" | "dark" = "dark"): string {
+  codeToHtml(command, {
+    lang: 'javascript',
+    theme: `github-${theme}`
+  }).then((html) => {
+    return html
+  })
+
+  return ""
+}

src/index.ts

@@ -3,17 +3,35 @@ import { npmToYarn } from './npmToYarn'
 import { npmToPnpm } from './npmToPnpm'
 import { npmToBun } from './npmToBun'
 
+import { highlight } from './highlight.js'
+
 /**
  * Converts between npm and yarn command
  */
-export default function convert (str: string, to: 'npm' | 'yarn' | 'pnpm' | 'bun'): string {
+export default function convert (str: string, to: 'npm' | 'yarn' | 'pnpm' | 'bun', highlighting = false, theme : "light" | "dark" = "dark"): string {
   if (to === 'npm') {
-    return str.replace(/yarn(?: +([^&\n\r]*))?/gm, yarnToNPM)
+    const convertedCommand = str.replace(/yarn(?: +([^&\n\r]*))?/gm, yarnToNPM)
+    if (highlighting)
+      return highlight(convertedCommand, theme)
+
+    return convertedCommand
   } else if (to === 'pnpm') {
-    return str.replace(/npm(?: +([^&\n\r]*))?/gm, npmToPnpm)
+    const convertedCommand = str.replace(/npm(?: +([^&\n\r]*))?/gm, npmToPnpm)
+    if (highlighting)
+      return highlight(convertedCommand, theme)
+
+    return convertedCommand
   } else if (to === 'bun') {
-    return str.replace(/npm(?: +([^&\n\r]*))?/gm, npmToBun)
+    const convertedCommand = str.replace(/npm(?: +([^&\n\r]*))?/gm, npmToBun)
+    if (highlighting)
+      return highlight(convertedCommand, theme)
+
+    return convertedCommand
   } else {
-    return str.replace(/npm(?: +([^&\n\r]*))?/gm, npmToYarn)
+    const convertedCommand = str.replace(/npm(?: +([^&\n\r]*))?/gm, npmToYarn)
+    if (highlighting)
+      return highlight(convertedCommand, theme)
+
+    return convertedCommand
   }
 }