Add a tsconfig bazelOptions devmodeTargetOverride experimental setting
Closes #426
PiperOrigin-RevId: 234895524
diff --git a/internal/tsc_wrapped/tsconfig.ts b/internal/tsc_wrapped/tsconfig.ts
index 060b5ff..512b314 100644
--- a/internal/tsc_wrapped/tsconfig.ts
+++ b/internal/tsc_wrapped/tsconfig.ts
@@ -36,7 +36,10 @@
/** If true, convert require()s into goog.module(). */
googmodule: boolean;
- /** If true, emit ES5 into filename.es5.js. */
+ /**
+ * If true, emit devmode output into filename.js.
+ * If false, emit prodmode output into filename.closure.js.
+ */
es5Mode: boolean;
/** If true, convert TypeScript code into a Closure-compatible variant. */
@@ -161,6 +164,17 @@
* Enable the Angular ngtsc plugin.
*/
compileAngularTemplates?: boolean;
+
+ /**
+ * Override for ECMAScript target language level to use for devmode.
+ *
+ * This setting can be set in a user's tsconfig to override the default
+ * devmode target.
+ *
+ * EXPERIMENTAL: This setting is experimental and may be removed in the
+ * future.
+ */
+ devmodeTargetOverride?: string;
}
export interface ParsedTsConfig {
@@ -299,6 +313,8 @@
bazelOpts.tsickle = bazelOpts.tsickle || userConfig.bazelOptions.tsickle;
bazelOpts.googmodule =
bazelOpts.googmodule || userConfig.bazelOptions.googmodule;
+ bazelOpts.devmodeTargetOverride = bazelOpts.devmodeTargetOverride ||
+ userConfig.bazelOptions.devmodeTargetOverride;
}
if (!bazelOpts.suppressTsconfigOverrideWarnings) {
warnOnOverriddenOptions(userConfig);
@@ -311,6 +327,36 @@
return [null, errors, {target}];
}
+ // Override the devmode target if devmodeTargetOverride is set
+ if (bazelOpts.es5Mode && bazelOpts.devmodeTargetOverride) {
+ switch (bazelOpts.devmodeTargetOverride.toLowerCase()) {
+ case 'es3':
+ options.target = ts.ScriptTarget.ES3;
+ break;
+ case 'es5':
+ options.target = ts.ScriptTarget.ES5;
+ break;
+ case 'es2015':
+ options.target = ts.ScriptTarget.ES2015;
+ break;
+ case 'es2016':
+ options.target = ts.ScriptTarget.ES2016;
+ break;
+ case 'es2017':
+ options.target = ts.ScriptTarget.ES2017;
+ break;
+ case 'es2018':
+ options.target = ts.ScriptTarget.ES2018;
+ break;
+ case 'esnext':
+ options.target = ts.ScriptTarget.ESNext;
+ break;
+ default:
+ console.error(
+ 'WARNING: your tsconfig.json file specifies an invalid bazelOptions.devmodeTargetOverride value of: \'${bazelOpts.devmodeTargetOverride\'');
+ }
+ }
+
// Sort rootDirs with longest include directories first.
// When canonicalizing paths, we always want to strip
// `workspace/bazel-bin/file` to just `file`, not to `bazel-bin/file`.
