feat: add cli

lib/compiler/cli.ts

@@ -0,0 +1,19 @@
+import { writeFileSync } from 'fs';
+import { Compiler, CompilerHost } from './compiler';
+
+const root = process.argv.length > 1 ? process.argv[2] : undefined;
+
+const host: CompilerHost = {
+  writeFile: (filename, code) => writeFileSync(filename, code)
+};
+
+Compiler.create(host, root)
+  .run()
+  .then(() => {
+    process.exit(0);
+  })
+  .catch(e => {
+    setImmediate(() => {
+      throw e;
+    });
+  });

lib/compiler/compiler.ts

@@ -39,13 +39,17 @@ export interface CompilerHost {
 export class Compiler {
   public static create(
     host: CompilerHost,
-    languageService = Compiler.createLanguageService()
+    root = '.',
+    languageService = Compiler.createLanguageService(root)
   ): Compiler {
     return new Compiler(host, languageService);
   }
 
-  private static createLanguageService(): ts.LanguageService {
-    const configFile = ts.findConfigFile(process.cwd(), ts.sys.fileExists);
+  private static createLanguageService(root: string): ts.LanguageService {
+    const configFile = ts.findConfigFile(
+      root || process.cwd(),
+      ts.sys.fileExists
+    );
     if (!configFile) {
       throw new Error('Unable to find tsconfig.json');
     }

package.json

@@ -96,6 +96,11 @@
     "collectCoverage": true,
     "collectCoverageFrom": [
       "lib/**"
+    ],
+    "coveragePathIgnorePatterns": [
+      "/node_modules/",
+      "/lib/compiler/cli.ts",
+      "/lib/compiler/decorators.ts"
     ]
   },
   "renovate": {

tests/compiler/compiler.test.helper.ts

@@ -55,6 +55,7 @@ export async function runCompiler(files: {
       {
         writeFile: (_, data) => resolve(data)
       },
+      '.',
       service
     );
     await compiler.run('/decorators.ts');

tests/compiler/example/main.ts

@@ -0,0 +1,8 @@
+import { container } from '../../../lib/compiler/decorators';
+
+export class Entry {}
+
+@container({ units: [] })
+export abstract class Container {
+  public abstract entry: Entry;
+}