feat: add support for Array.prototype.findLast,findLastIndex (#4332)

dnalborczyk · web-flow · commit 342ba2c17bb4 · 2022-01-04T07:17:55.000+01:00
diff --git a/src/ast/nodes/shared/ArrayPrototype.ts b/src/ast/nodes/shared/ArrayPrototype.ts
@@ -128,6 +128,8 @@ export const ARRAY_PROTOTYPE = new ObjectEntity(
 		filter: METHOD_CALLS_ARG_DEOPTS_SELF_RETURNS_NEW_ARRAY,
 		find: METHOD_CALLS_ARG_DEOPTS_SELF_RETURNS_UNKNOWN,
 		findIndex: METHOD_CALLS_ARG_DEOPTS_SELF_RETURNS_NUMBER,
+		findLast: METHOD_CALLS_ARG_DEOPTS_SELF_RETURNS_UNKNOWN,
+		findLastIndex: METHOD_CALLS_ARG_DEOPTS_SELF_RETURNS_NUMBER,
 		flat: METHOD_DEOPTS_SELF_RETURNS_NEW_ARRAY,
 		flatMap: METHOD_CALLS_ARG_DEOPTS_SELF_RETURNS_NEW_ARRAY,
 		forEach: METHOD_CALLS_ARG_DEOPTS_SELF_RETURNS_UNKNOWN,
diff --git a/test/form/samples/builtin-prototypes/array-expression/_expected.js b/test/form/samples/builtin-prototypes/array-expression/_expected.js
@@ -35,10 +35,18 @@ _filterArray[0].effect();
 const _findArray = [{ effect() {} }];
 _findArray.find(element => (element.effect = () => console.log(1)));
 _findArray[0].effect();
+[1].findLast(() => console.log(1) || true);
+const _findLastArray = [{ effect() {} }];
+_findLastArray.findLast(element => (element.effect = () => console.log(1)));
+_findLastArray[0].effect();
 [1].findIndex(() => console.log(1) || true);
 const _findIndexArray = [{ effect() {} }];
 _findIndexArray.findIndex(element => (element.effect = () => console.log(1)));
 _findIndexArray[0].effect();
+[1].findLastIndex(() => console.log(1) || true);
+const _findLastIndexArray = [{ effect() {} }];
+_findLastIndexArray.findLastIndex(element => (element.effect = () => console.log(1)));
+_findLastIndexArray[0].effect();
 [1].flatMap(() => console.log(1) || 1);
 const _flatMapArray = [{ effect() {} }];
 _flatMapArray.flatMap(element => (element.effect = () => console.log(1)));
diff --git a/test/form/samples/builtin-prototypes/array-expression/main.js b/test/form/samples/builtin-prototypes/array-expression/main.js
@@ -74,12 +74,24 @@ const _findArray = [{ effect() {} }];
 _findArray.find(element => (element.effect = () => console.log(1)));
 _findArray[0].effect();
 
+const _findLast = [1].findLast(() => true);
+const _findLastEffect = [1].findLast(() => console.log(1) || true);
+const _findLastArray = [{ effect() {} }];
+_findLastArray.findLast(element => (element.effect = () => console.log(1)));
+_findLastArray[0].effect();
+
 const _findIndex = [1].findIndex(() => true).toPrecision(1);
 const _findIndexEffect = [1].findIndex(() => console.log(1) || true);
 const _findIndexArray = [{ effect() {} }];
 _findIndexArray.findIndex(element => (element.effect = () => console.log(1)));
 _findIndexArray[0].effect();
 
+const _findLastIndex = [1].findLastIndex(() => true).toPrecision(1);
+const _findLastIndexEffect = [1].findLastIndex(() => console.log(1) || true);
+const _findLastIndexArray = [{ effect() {} }];
+_findLastIndexArray.findLastIndex(element => (element.effect = () => console.log(1)));
+_findLastIndexArray[0].effect();
+
 const _flatMap = [1].flatMap(() => 1).join(',');
 const _flatMapEffect = [1].flatMap(() => console.log(1) || 1);
 const _flatMapArray = [{ effect() {} }];
