Add gulp task to verify successful compilation of API

gulpfile.js

@@ -23,11 +23,11 @@ const os = require('os');
 const rmrf = require('rimraf');
 const typescript = require('typescript');
 
-const tsProject = ts.createProject('./tsconfig.json', { typescript });
+const tsProject = ts.createProject('./pythonExtensionApi/tsconfig.json', { typescript });
 
 const isCI = process.env.TRAVIS === 'true' || process.env.TF_BUILD !== undefined;
 
-gulp.task('compile', (done) => {
+gulp.task('compileCore', (done) => {
     let failed = false;
     tsProject
         .src()
@@ -39,6 +39,22 @@ gulp.task('compile', (done) => {
         .on('finish', () => (failed ? done(new Error('TypeScript compilation errors')) : done()));
 });
 
+const apiTsProject = ts.createProject('./pythonExtensionApi/tsconfig.json', { typescript });
+
+gulp.task('compileApi', (done) => {
+    let failed = false;
+    apiTsProject
+        .src()
+        .pipe(apiTsProject())
+        .on('error', () => {
+            failed = true;
+        })
+        .js.pipe(gulp.dest('./pythonExtensionApi/out'))
+        .on('finish', () => (failed ? done(new Error('TypeScript compilation errors')) : done()));
+});
+
+gulp.task('compile', gulp.series('compileCore', 'compileApi'));
+
 gulp.task('precommit', (done) => run({ exitOnError: true, mode: 'staged' }, done));
 
 gulp.task('output:clean', () => del(['coverage']));

pythonExtensionApi/README.md

@@ -19,7 +19,7 @@ First we need to define a `package.json` for the extension that wants to use the
 	// Depend on the Python extension facade npm module to get easier API access to the
 	// core extension.
 	"dependencies": {
-		"@vscode/pythonExtensionApi": "..."
+		"@vscode/python-extension": "..."
 	},
 }
 ```

pythonExtensionApi/tsconfig.json

@@ -1,8 +1,9 @@
 {
     "compilerOptions": {
-        "composite": true,
-        "incremental": true,
         "baseUrl": ".",
+        "paths": {
+            "*": ["types/*"]
+        },
         "module": "commonjs",
         "target": "es2018",
         "outDir": "./out",
@@ -24,8 +25,7 @@
         "noUnusedParameters": true,
         "noFallthroughCasesInSwitch": true,
         "resolveJsonModule": true,
-        "removeComments": true,
-        "tsBuildInfoFile": "./out/tsconfig.tsbuildInfo",
+        "removeComments": true
     },
     "exclude": [
         "node_modules",