feat: 🎸 unify PrintChild type and re-export everything

Author: streamich

src/index.ts

@@ -0,0 +1,3 @@
+export type * from './types';
+export * from './printTree';
+export * from './printBinary';

src/printBinary.ts

@@ -1,7 +1,8 @@
-type Child = (tab: string) => string;
+import type {PrintChild} from './types';
 
-export const printBinary = (tab = '', children: [left?: null | Child, right?: null | Child]): string => {
-  const left = children[0], right = children[1];
+export const printBinary = (tab = '', children: [left?: null | PrintChild, right?: null | PrintChild]): string => {
+  const left = children[0],
+    right = children[1];
   let str = '';
   if (left) str += '\n' + tab + '← ' + left(tab + '  ');
   if (right) str += '\n' + tab + '→ ' + right(tab + '  ');

src/printTree.ts

@@ -1,6 +1,6 @@
-type Child = (tab: string) => string;
+import type {PrintChild} from './types';
 
-export const printTree = (tab = '', children: (Child | null)[]): string => {
+export const printTree = (tab = '', children: (PrintChild | null)[]): string => {
   let str = '';
   const length = children.length;
   const last = length - 1;

src/types.ts

@@ -11,3 +11,5 @@ export interface Printable {
    */
   toString(tab?: string): string;
 }
+
+export type PrintChild = (tab: string) => string;