fix(types): supportsColor is top‑level only

index.d.ts

@@ -67,11 +67,11 @@ export interface ColorSupport {
 	has16m: boolean;
 }
 
+export type ChalkTemplateFunction = (text: TemplateStringsArray, ...placeholders: unknown[]) => string;
+
 export interface Chalk {
 	(...text: unknown[]): string;
 
-	(text: TemplateStringsArray, ...placeholders: unknown[]): string;
-
 	/**
 	 * Return a new Chalk instance.
 	 */
@@ -265,12 +265,15 @@ export interface Chalk {
 	readonly bgWhiteBright: this;
 }
 
+declare type NoThis<T> = {[K in keyof T]: T[K] extends T ? T : T[K]};
+export {}
+
 /**
  * Main Chalk object that allows to chain styles together.
  * Call the last one as a method with a string argument.
  * Order doesn't matter, and later styles take precedent in case of a conflict.
  * This simply means that `chalk.red.yellow.green` is equivalent to `chalk.green`.
  */
-declare const chalk: Chalk & {supportsColor: ColorSupport};
+declare const chalk: NoThis<Chalk> & ChalkTemplateFunction & {readonly supportsColor: ColorSupport};
 
 export default chalk;

index.test-d.ts

@@ -1,8 +1,8 @@
 import {expectType} from 'tsd-check';
-import chalk, {Level, Chalk, ColorSupport} from '.';
+import chalk, {Level, Chalk} from '.';
 
 // - Helpers -
-type colorReturn = Chalk & {supportsColor: ColorSupport};
+type colorReturn = Chalk & {supportsColor?: never};
 
 // - Level -
 expectType<number>(Level.None);