feat(dees-terminal): Enhanced the dees-terminal component to support environment variable settings and improved setup command execution.

ts_web/elements/dees-terminal.ts

@@ -22,13 +22,25 @@ declare global {
 
 @customElement('dees-terminal')
 export class DeesTerminal extends DeesElement {
-  public static demo = () => html` <dees-terminal></dees-terminal> `;
+  public static demo = () => html` <dees-terminal
+    .environment=${{
+      NODE_ENV: 'development',
+      PORT: '3000',
+    }}
+  ></dees-terminal> `;
 
   // INSTANCE
   private resizeObserver: ResizeObserver;
 
   @property()
-  public setupCommand = `pnpm install @git.zone/tsbuild && clear && echo 'welcome'`;
+  public setupCommand = `pnpm install @serve.zone/cli && servezone cli\n`;
+
+  @property()
+  environment: {[key: string]: string} = {};
+
+  // exposing webcontainer
+  private webcontainerDeferred = new domtools.plugins.smartpromise.Deferred<webcontainer.WebContainer>();
+  public webcontainerPromise = this.webcontainerDeferred.promise;
 
   constructor() {
     super();
@@ -282,8 +294,15 @@ export class DeesTerminal extends DeesElement {
       input.write(data);
     });
     await this.waitForPrompt(term, '~/');
+    // lets set the environment variables
+    await this.setEnvironmentVariables(this.environment, webcontainerInstance);
+    input.write(`source source.env\n`);
+    await this.waitForPrompt(term, '~/');
+    // lets run the setup command
     input.write(this.setupCommand);
-    input.write(`\n`);
+    await this.waitForPrompt(term, '~/');
+    input.write(`clear && echo 'welcome'\n`);
+    this.webcontainerDeferred.resolve(webcontainerInstance);
   }
 
   async connectedCallback(): Promise<void> {
@@ -300,14 +319,16 @@ export class DeesTerminal extends DeesElement {
     this.fitAddon.fit();
   }
 
-  private async waitForPrompt(term: Terminal, prompt: string): Promise<void> {
+  public async waitForPrompt(term: Terminal, prompt: string): Promise<void> {
     return new Promise<void>((resolve) => {
       const checkPrompt = () => {
         const lines = term.buffer.active;
         for (let i = 0; i < lines.length; i++) {
           const line = lines.getLine(i);
           if (line && line.translateToString().includes(prompt)) {
-            resolve();
+            setTimeout(() => {
+              resolve();
+            }, 100);
             return;
           }
         }
@@ -317,4 +338,18 @@ export class DeesTerminal extends DeesElement {
       checkPrompt();
     });
   }
+
+  public async setEnvironmentVariables(envArg: {[key: string]: string}, webcontainerInstanceArg?: webcontainer.WebContainer) {
+    const webcontainerInstance = webcontainerInstanceArg ||await this.webcontainerPromise;
+    let envFile = ``
+    for (const key in envArg) { 
+      envFile += `export ${key}="${envArg[key]}"\n`;
+    }
+
+    await webcontainerInstance.mount({'source.env': {
+      file: {
+        contents: envFile,
+      }
+    }});
+  }
 }