feat: setup cli plugin

Author: jbl428

lib/plugin/compiler-plugin.ts

@@ -0,0 +1,34 @@
+import type * as ts from 'typescript';
+import { mergePluginOptions } from './merge-options';
+import { HttpInterfaceVisitor } from './visitors/http-interface.visitor';
+
+const httpInterfaceVisitor = new HttpInterfaceVisitor();
+
+function isFilenameMatched(patterns: string[], filename: string): boolean {
+  return patterns.some((path) => filename.includes(path));
+}
+
+export const before: (
+  options: Record<string, any> | undefined,
+  program: ts.Program,
+) => (ctx: ts.TransformationContext) => ts.Transformer<any> = (
+  options,
+  program,
+) => {
+  const mergedOption = mergePluginOptions(options);
+
+  return (ctx: ts.TransformationContext): ts.Transformer<any> => {
+    return (sf: ts.SourceFile) => {
+      if (
+        isFilenameMatched(
+          mergedOption.interfaceFilenameSuffix as string[],
+          sf.fileName,
+        )
+      ) {
+        return httpInterfaceVisitor.visit(sf, ctx, program);
+      }
+
+      return sf;
+    };
+  };
+};

lib/plugin/index.ts

@@ -0,0 +1 @@
+export * from './compiler-plugin';

lib/plugin/merge-options.ts

@@ -0,0 +1,20 @@
+export interface PluginOptions {
+  interfaceFilenameSuffix?: string | string[];
+}
+
+const defaultOptions: PluginOptions = {
+  interfaceFilenameSuffix: ['.service.ts'],
+};
+
+export const mergePluginOptions = (
+  options: Record<string, any> = {},
+): PluginOptions => {
+  if (typeof options.interfaceFilenameSuffix === 'string') {
+    options.interfaceFilenameSuffix = [options.interfaceFilenameSuffix];
+  }
+
+  return {
+    ...defaultOptions,
+    ...options,
+  };
+};

lib/plugin/visitors/http-interface.visitor.ts

@@ -0,0 +1,11 @@
+import type * as ts from 'typescript';
+
+export class HttpInterfaceVisitor {
+  visit(
+    sourceFile: ts.SourceFile,
+    ctx: ts.TransformationContext,
+    program: ts.Program,
+  ): ts.SourceFile {
+    return sourceFile;
+  }
+}

plugin.js

@@ -0,0 +1,8 @@
+'use strict';
+Object.defineProperty(exports, '__esModule', { value: true });
+const tslib_1 = require('tslib');
+const plugin = require('./dist/plugin');
+(0, tslib_1.__exportStar)(plugin, exports);
+
+/** Compatibility with ts-patch/ttypescript */
+exports.default = (program, options) => plugin.before(options, program);