refactor(codegen): simplify return value hints (#17)

Author: jonambas

src/__tests__/codegen.test.ts

@@ -37,14 +37,14 @@ describe('codegen', () => {
               "file": "ct.mjs",
             },
             {
-              "code": "const pluginCtMap = {
+              "code": "type PluginCtMapType = {
         'foo.100': '#fff',
         'foo.200': {"base":"#000","lg":"#111"},
         'bar.100': 'red',
         'bar.200': 'blue',
-      } as const;
+      }
           
-      export const ct: <T extends keyof typeof pluginCtMap>(alias: T) => typeof pluginCtMap[T];",
+      export const ct: <T extends keyof PluginCtMapType>(alias: T) => PluginCtMapType[T];",
               "file": "ct.d.ts",
             },
           ],

src/codegen.ts

@@ -32,7 +32,7 @@ export const codegen = (
   const ctDtsFile: ArtifactContent = {
     file: 'ct.d.ts',
     code: `${serializeMapTypes(map)}
-    \nexport const ct: <T extends keyof typeof pluginCtMap>(alias: T) => typeof pluginCtMap[T];`,
+    \nexport const ct: <T extends keyof PluginCtMapType>(alias: T) => PluginCtMapType[T];`,
   };
 
   cssFn.files.push(ctFile, ctDtsFile);

src/utils.ts

@@ -15,10 +15,10 @@ export const serializeValue = (value: any) => {
 };
 
 export const serializeMapTypes = (map: Map<any, any>) => {
-  let code = 'const pluginCtMap = {';
+  let code = 'type PluginCtMapType = {';
   for (const [key, value] of map.entries()) {
     code += `\n  '${key}': ${serializeValue(value)},`;
   }
-  code += '\n} as const;';
+  code += '\n}';
   return code;
 };