fix(template): remove unnecessary importing placeholder

gulpfile.ts

@@ -179,20 +179,11 @@ function get_top_level_members(filename: string): dts.ITopLevelMember[] {
       throw new Error(`Exported functions in ${filename} should be prefixed with $`);
     }
 
-    const placeholder_imports =
-      (functions[0].type!.parameters!.length <= 1)
-        ? []
-        : [
-          dts.create_import_named({
-            from: './$placeholder',
-            members: [
-              dts.create_import_member({
-                name: placeholder_name_abbr,
-                property: placeholder_name,
-              }),
-            ],
-          }),
-        ];
+    const placeholder_imports = (!placeholder || functions[0].type!.parameters!.length <= 1)
+      ? []
+      : dts.parse(`
+        import {${placeholder_name} as ${placeholder_name_abbr}} from './$placeholder';
+      `).members;
 
     const curried_declarations = create_curried_declarations(
       filename,

templates/$curried-functions.ts

@@ -5,16 +5,14 @@ import {create_curried_interfaces} from './utils/create-curried-interfaces';
 export const max_curry_level = 6;
 
 export default (selectable: boolean, placeholder: boolean) => [
-  dts.create_import_named({
-    members: [
-      dts.create_import_member({
-        name: placeholder_name_abbr,
-        property: placeholder_name,
-      }),
-    ],
-    from: './$placeholder',
-  }),
-  ...dts.parse(`export type CurriedFunction0<R> = () => R;`).members,
+  ...dts.parse(`
+    ${
+      placeholder
+       ? `import {${placeholder_name} as ${placeholder_name_abbr}} from './$placeholder';`
+       : ''
+    }
+    export type CurriedFunction0<R> = () => R;
+  `).members,
   ...create_curried_interfaces(max_curry_level, selectable, placeholder).map(
     the_interface => ({
       ...the_interface,