chore: wip

fixtures/input/class.ts

@@ -0,0 +1,61 @@
+export class CustomError extends Error {
+  constructor(
+    message: string,
+    public readonly code: number,
+    public readonly metadata: Record<string, unknown>
+  ) {
+    super(message)
+    this.name = 'CustomError'
+  }
+}
+
+// export class CustomErrorWithMethod extends CustomError {
+//   logError() {
+//     console.error(`[${this.code}] ${this.message}`)
+//   }
+// }
+
+// export class CustomErrorWithMethodAndType extends CustomError {
+//   logError(): void {
+//     console.error(`[${this.code}] ${this.message}`)
+//   }
+
+//   getError(): Error {
+//     return this
+//   }
+// }
+
+// export class CustomErrorWithMethodAndTypeAndReturn {
+//   constructor(
+//     private message: string,
+//     public readonly code: number,
+//     public readonly metadata: Record<string, unknown>
+//   ) {
+//     this.message = message
+//     this.code = code
+//     this.metadata = metadata
+//   }
+
+//   logError(): void {
+//     console.error(`[${this.code}] ${this.message}`)
+//   }
+
+//   getError(): Error {
+//     return new Error(this.message)
+//   }
+// }
+
+// export class Result<T, E extends Error> {
+//   constructor(
+//     readonly value: T | null = null,
+//     readonly error: E | null = null
+//   ) {}
+
+//   isOk(): this is { readonly value: T } {
+//     return this.value !== null && this.error === null;
+//   }
+
+//   isErr(): this is { readonly error: E } {
+//     return this.error !== null && this.value === null;
+//   }
+// }

fixtures/output/class.d.ts

@@ -0,0 +1,10 @@
+export declare class CustomError extends Error {
+  constructor(
+    message: string,
+    public readonly code: number,
+    public readonly metadata: Record<string, unknown>
+  ) {
+    super(message)
+    this.name = 'CustomError'
+  }
+}