Fixed slice

Perryvw · Perryvw · commit afa4e5b7695e · 2018-07-20T12:36:55.000+02:00
diff --git a/src/lualib/ArraySlice.ts b/src/lualib/ArraySlice.ts
@@ -0,0 +1,33 @@
+// https://www.ecma-international.org/publications/files/ECMA-ST/Ecma-262.pdf 22.1.3.23
+function __TS__ArraySlice<T>(list: T[], first: number, last: number): T[] {
+    const len = list.length;
+
+    let k: number;
+    if (first < 0) {
+        k = Math.max(len + first, 0);
+    } else {
+        k = Math.min(first, len);
+    }
+
+    let relativeEnd = last;
+    if (last === undefined) {
+        relativeEnd = len;
+    }
+
+    let final: number;
+    if (relativeEnd < 0) {
+        final = Math.max(len + relativeEnd, 0);
+    } else {
+        final = Math.min(relativeEnd, len);
+    }
+
+    const out = [];
+
+    let n = 0;
+    while (k < final) {
+        out[n] = list[k];
+        k++;
+        n++;
+    }
+    return out;
+}
diff --git a/src/lualib/ArraySplice.ts b/src/lualib/ArraySplice.ts
@@ -1,5 +1,5 @@
 // https://www.ecma-international.org/publications/files/ECMA-ST/Ecma-262.pdf
-function __TS__ArraySplice<T>(list: T[], start: number, deleteCount: number, ...items: T[]) {
+function __TS__ArraySplice<T>(list: T[], start: number, deleteCount: number, ...items: T[]): T[] {
     // 1. 2.
     const len = list.length;
 
diff --git a/test/unit/lualib.spec.ts b/test/unit/lualib.spec.ts
@@ -1,7 +1,6 @@
-import { Expect, Test, TestCase, FocusTests } from "alsatian";
+import { Expect, Test, TestCase } from "alsatian";
 import * as util from "../src/util";
 
-@FocusTests
 export class LuaLibArrayTests {
 
     @TestCase([0, 1, 2, 3], [1, 2, 3, 4])
