fix: improve path handling for .d.ts file emission

- Fix leading slash in relative path
- Use .d.ts extension instead of .csv.d.ts
- Support typesOutputDir option properly
- Use ./ prefix for module declaration path

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

dist/csv-loader/loader.d.mts

@@ -7,6 +7,10 @@ interface CsvLoaderOptions {
     bom?: boolean;
     comment?: string | false;
     trim?: boolean;
+    /** Generate TypeScript declaration file (.d.ts) */
+    emitTypes?: boolean;
+    /** Output directory for generated type files (relative to output path) */
+    typesOutputDir?: string;
 }
 declare function csvLoader(this: LoaderContext<CsvLoaderOptions>, content: string): string | Buffer;
 

dist/csv-loader/loader.d.ts

@@ -7,6 +7,10 @@ interface CsvLoaderOptions {
     bom?: boolean;
     comment?: string | false;
     trim?: boolean;
+    /** Generate TypeScript declaration file (.d.ts) */
+    emitTypes?: boolean;
+    /** Output directory for generated type files (relative to output path) */
+    typesOutputDir?: string;
 }
 declare function csvLoader(this: LoaderContext<CsvLoaderOptions>, content: string): string | Buffer;
 

dist/csv-loader/loader.js

@@ -1,7 +1,9 @@
 "use strict";
+var __create = Object.create;
 var __defProp = Object.defineProperty;
 var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
 var __getOwnPropNames = Object.getOwnPropertyNames;
+var __getProtoOf = Object.getPrototypeOf;
 var __hasOwnProp = Object.prototype.hasOwnProperty;
 var __export = (target, all) => {
   for (var name in all)
@@ -15,6 +17,14 @@ var __copyProps = (to, from, except, desc) => {
   }
   return to;
 };
+var __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(
+  // If the importer is in node compatibility mode or this is not an ESM
+  // file that has been converted to a CommonJS file using a Babel-
+  // compatible transform (i.e. "__esModule" has not been set), then set
+  // "default" to the CommonJS "module.exports" for node compatibility.
+  isNodeMode || !mod || !mod.__esModule ? __defProp(target, "default", { value: mod, enumerable: true }) : target,
+  mod
+));
 var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
 
 // src/csv-loader/loader.ts
@@ -354,6 +364,43 @@ function createValidator(schema) {
 }
 
 // src/csv-loader/loader.ts
+var path = __toESM(require("path"));
+function schemaToTypeString(schema) {
+  switch (schema.type) {
+    case "string":
+      return "string";
+    case "number":
+      return "number";
+    case "boolean":
+      return "boolean";
+    case "array":
+      if (schema.element.type === "tuple") {
+        const tupleElements2 = schema.element.elements.map(schemaToTypeString);
+        return `[${tupleElements2.join(", ")}]`;
+      }
+      return `${schemaToTypeString(schema.element)}[]`;
+    case "tuple":
+      const tupleElements = schema.elements.map(schemaToTypeString);
+      return `[${tupleElements.join(", ")}]`;
+    default:
+      return "unknown";
+  }
+}
+function generateTypeDefinition(resourceName, propertyConfigs, relativePath) {
+  const interfaceName = path.basename(resourceName, path.extname(resourceName)).replace(/[^a-zA-Z0-9_$]/g, "_").replace(/^(\d)/, "_$1");
+  const properties = propertyConfigs.map((config) => `  ${config.name}: ${schemaToTypeString(config.schema)};`).join("\n");
+  return `declare module "${relativePath}" {
+  export interface ${interfaceName} {
+${properties}
+  }
+
+  export type RowType = ${interfaceName};
+
+  const data: ${interfaceName}[];
+  export default data;
+}
+`;
+}
 function csvLoader(content) {
   const options = this.getOptions();
   const delimiter = options?.delimiter ?? ",";
@@ -362,6 +409,8 @@ function csvLoader(content) {
   const bom = options?.bom ?? true;
   const comment = options?.comment === false ? void 0 : options?.comment ?? "#";
   const trim = options?.trim ?? true;
+  const emitTypes = options?.emitTypes ?? true;
+  const typesOutputDir = options?.typesOutputDir ?? "";
   const records = (0, import_sync.parse)(content, {
     delimiter,
     quote,
@@ -416,5 +465,17 @@ function csvLoader(content) {
     return obj;
   });
   const json = JSON.stringify(objects, null, 2);
+  if (emitTypes) {
+    const context = this.context || "";
+    let relativePath = this.resourcePath.replace(context, "");
+    if (relativePath.startsWith("\\") || relativePath.startsWith("/")) {
+      relativePath = relativePath.substring(1);
+    }
+    relativePath = relativePath.replace(/\\/g, "/");
+    const dtsFileName = relativePath.replace(/\.csv$/, ".d.ts");
+    const outputPath = typesOutputDir ? path.join(typesOutputDir, dtsFileName) : dtsFileName;
+    const dtsContent = generateTypeDefinition(this.resourcePath, propertyConfigs, `./${relativePath}`);
+    this.emitFile?.(outputPath, dtsContent);
+  }
   return `export default ${json};`;
 }

dist/csv-loader/loader.mjs

@@ -330,6 +330,43 @@ function createValidator(schema) {
 }
 
 // src/csv-loader/loader.ts
+import * as path from "path";
+function schemaToTypeString(schema) {
+  switch (schema.type) {
+    case "string":
+      return "string";
+    case "number":
+      return "number";
+    case "boolean":
+      return "boolean";
+    case "array":
+      if (schema.element.type === "tuple") {
+        const tupleElements2 = schema.element.elements.map(schemaToTypeString);
+        return `[${tupleElements2.join(", ")}]`;
+      }
+      return `${schemaToTypeString(schema.element)}[]`;
+    case "tuple":
+      const tupleElements = schema.elements.map(schemaToTypeString);
+      return `[${tupleElements.join(", ")}]`;
+    default:
+      return "unknown";
+  }
+}
+function generateTypeDefinition(resourceName, propertyConfigs, relativePath) {
+  const interfaceName = path.basename(resourceName, path.extname(resourceName)).replace(/[^a-zA-Z0-9_$]/g, "_").replace(/^(\d)/, "_$1");
+  const properties = propertyConfigs.map((config) => `  ${config.name}: ${schemaToTypeString(config.schema)};`).join("\n");
+  return `declare module "${relativePath}" {
+  export interface ${interfaceName} {
+${properties}
+  }
+
+  export type RowType = ${interfaceName};
+
+  const data: ${interfaceName}[];
+  export default data;
+}
+`;
+}
 function csvLoader(content) {
   const options = this.getOptions();
   const delimiter = options?.delimiter ?? ",";
@@ -338,6 +375,8 @@ function csvLoader(content) {
   const bom = options?.bom ?? true;
   const comment = options?.comment === false ? void 0 : options?.comment ?? "#";
   const trim = options?.trim ?? true;
+  const emitTypes = options?.emitTypes ?? true;
+  const typesOutputDir = options?.typesOutputDir ?? "";
   const records = parse(content, {
     delimiter,
     quote,
@@ -392,6 +431,18 @@ function csvLoader(content) {
     return obj;
   });
   const json = JSON.stringify(objects, null, 2);
+  if (emitTypes) {
+    const context = this.context || "";
+    let relativePath = this.resourcePath.replace(context, "");
+    if (relativePath.startsWith("\\") || relativePath.startsWith("/")) {
+      relativePath = relativePath.substring(1);
+    }
+    relativePath = relativePath.replace(/\\/g, "/");
+    const dtsFileName = relativePath.replace(/\.csv$/, ".d.ts");
+    const outputPath = typesOutputDir ? path.join(typesOutputDir, dtsFileName) : dtsFileName;
+    const dtsContent = generateTypeDefinition(this.resourcePath, propertyConfigs, `./${relativePath}`);
+    this.emitFile?.(outputPath, dtsContent);
+  }
   return `export default ${json};`;
 }
 export {