perf: release memory

Author: chandq

src/array.ts

@@ -26,6 +26,8 @@ export function arrayEach<V>(
       else if (re === true) continue;
     }
   }
+  // @ts-ignore
+  array = null;
 }
 
 /**

src/object.ts

@@ -36,6 +36,8 @@ export function objectEach<O extends AnyObject>(
     if (!objectHas(obj, key)) continue;
     if (iterator(obj[key], key) === false) break;
   }
+  // @ts-ignore
+  obj = null;
 }
 
 /**
@@ -69,7 +71,8 @@ export function objectMap<O extends AnyObject, T>(
     if (!objectHas(obj, key)) continue;
     obj2[key] = iterator(obj[key], key);
   }
-
+  // @ts-ignore
+  obj = null;
   return obj2;
 }
 
@@ -90,6 +93,8 @@ export function objectPick<O extends AnyObject, K extends Extract<keyof O, strin
       obj2[k] = v;
     }
   });
+  // @ts-ignore
+  obj = null;
   return obj2;
 }
 /**
@@ -109,6 +114,8 @@ export function objectOmit<O extends AnyObject, K extends Extract<keyof O, strin
       obj2[k] = v;
     }
   });
+  // @ts-ignore
+  obj = null;
   return obj2;
 }
 
@@ -205,14 +212,14 @@ export function objectFill<R extends AnyObject = AnyObject>(
   return source as R;
 }
 /**
- * 获取对象指定层级下的属性值（现在可用ES6+的可选链?.来替代）
+ * 获取对象/数组指定层级下的属性值（现在可用ES6+的可选链?.来替代）
  * @param {AnyObject} obj
  * @param {string} path
  * @param {boolean} strict
  * @returns
  */
 export function objectGet(
-  obj: AnyObject,
+  obj: AnyObject | AnyArray | undefined,
   path: string,
   strict = false
 ): {

src/tree.ts

@@ -88,6 +88,8 @@ export function forEachDeep<V>(
     }
   };
   walk(tree, null);
+  // @ts-ignore
+  tree = null;
 }
 
 /**
@@ -165,6 +167,9 @@ export function mapDeep<T>(
     }
   };
   walk(tree, null, newTree);
+
+  // @ts-ignore
+  tree = null;
   return newTree;
 }
 export type IdLike = number | string;
@@ -229,7 +234,8 @@ export function formatTree(list: any[], options: IFieldOptions = defaultFieldOpt
       treeArr.push(item);
     }
   });
-
+  // @ts-ignore
+  list = null;
   return treeArr;
 }
 

test/dom.test.ts

@@ -63,5 +63,4 @@ test('getComputedCssVal', () => {
 });
 test('getStrWidthPx', () => {
   const width = getStrWidthPx('hello javascript');
-  console.log('width', width);
 });

test/object.test.ts

@@ -378,4 +378,7 @@ test('objectGet', () => {
   expect(objectGet(object2, 'a[1].b.c').p).toBeUndefined();
   expect(objectGet(object2, 'a[1].b.c').k).toBeUndefined();
   expect(objectGet(object2, 'a[1].b.c').v).toBeUndefined();
+
+  expect(objectGet([11, { aa: 1 }], '[0]').v).toBe(11);
+  expect(objectGet(undefined, '[0]').v).toBeUndefined();
 });

test/tree.test.ts

@@ -225,13 +225,13 @@ const treeArray = generateTreeArray(1000);
 test('compare formatTree buildTree', () => {
   // console.log('arr', arr);
   const arr = cloneDeep(treeArray) as any[];
-  // const startTime = Date.now();
+  console.time('buildTree time');
   const tree1 = buildTree('id', 'pid', arr);
-  // console.log('buildTree time:', Date.now() - startTime);
+  console.timeEnd('buildTree time');
 
-  // const startTime2 = Date.now();
+  console.time('formatTree time');
   const tree2 = formatTree(arr, { keyField: 'id', childField: 'children', pidField: 'pid' });
-  // console.log('formatTree time:', Date.now() - startTime2);
+  console.timeEnd('formatTree time');
 
   expect(tree1).toEqual(tree2);
 });