Add exit/quit/exit()/quit() (#220)

Author: aherlihy

packages/shell-api/src/shell-api.ts

@@ -1,10 +1,8 @@
-import {
-  shellApiClassDefault,
-  hasAsyncChild,
-  ShellApiClass, returnsPromise,
-} from './decorators';
+import { hasAsyncChild, returnsPromise, ShellApiClass, shellApiClassDefault } from './decorators';
 import { CursorIterationResult } from './result';
 import ShellInternalState from './shell-internal-state';
+import { ReplPlatform } from '@mongosh/service-provider-core';
+import { MongoshUnimplementedError } from '@mongosh/errors';
 
 @shellApiClassDefault
 @hasAsyncChild
@@ -22,6 +20,16 @@ export default class ShellApi extends ShellApiClass {
   show(arg): any {
     return this.internalState.currentDb.mongo.show(arg);
   }
+  async exit(): Promise<void> {
+    await this.internalState.close(true);
+    if (this.internalState.initialServiceProvider.platform === ReplPlatform.CLI) {
+      process.exit();
+    } else {
+      throw new MongoshUnimplementedError(
+        `exit not supported for current platform: ${ReplPlatform[this.internalState.initialServiceProvider.platform]}`
+      );
+    }
+  }
 
   @returnsPromise
   async it(): Promise<any> {

packages/shell-api/src/shell-internal-state.ts

@@ -76,7 +76,7 @@ export default class ShellInternalState {
   setCtx(contextObject: any): void {
     this.context = contextObject;
     contextObject.toIterator = toIterator;
-    contextObject.print = async(arg): void => {
+    contextObject.print = async(arg): Promise<void> => {
       if (arg.toReplString) {
         console.log(await arg.toReplString());
       } else {
@@ -91,6 +91,7 @@ export default class ShellInternalState {
           return this.shellApi[n](...args);
         };
       });
+    contextObject.quit = contextObject.exit;
     contextObject.help = this.shellApi.help;
     contextObject.printjson = contextObject.print;
     Object.assign(contextObject, ShellBson);

packages/shell-evaluator/src/shell-evaluator.ts

@@ -68,6 +68,9 @@ class ShellEvaluator {
         return this.internalState.shellApi.show(argv[0]);
       case 'it':
         return this.internalState.shellApi.it();
+      case 'exit':
+      case 'quit':
+        return await this.internalState.shellApi.exit();
       case 'enableTelemetry()':
         if (this.container) {
           return this.container.toggleTelemetry(true);