//// [destructuringArrayBindingPatternAndAssignment1ES5.ts] /* AssignmentPattern: * ObjectAssignmentPattern * ArrayAssignmentPattern * ArrayAssignmentPattern: * [Elision AssignmentRestElementopt ] * [AssignmentElementList] * [AssignmentElementList, Elision AssignmentRestElementopt ] * AssignmentElementList: * Elision AssignmentElement * AssignmentElementList, Elisionopt AssignmentElement * AssignmentElement: * LeftHandSideExpression Initialiseropt * AssignmentPattern Initialiseropt * AssignmentRestElement: * ... LeftHandSideExpression */ // In a destructuring assignment expression, the type of the expression on the right must be assignable to the assignment target on the left. // An expression of type S is considered assignable to an assignment target V if one of the following is true // V is an array assignment pattern, S is the type Any or an array-like type (section 3.3.2), and, for each assignment element E in V, // S is the type Any, or var [a0, a1]: any = undefined; var [a2 = false, a3 = 1]: any = undefined; // V is an array assignment pattern, S is the type Any or an array-like type (section 3.3.2), and, for each assignment element E in V, // S is a tuple- like type (section 3.3.3) with a property named N of a type that is assignable to the target given in E, // where N is the numeric index of E in the array assignment pattern, or var [b0, b1, b2] = [2, 3, 4]; var [b3, b4, b5]: [number, number, string] = [1, 2, "string"]; function foo() { return [1, 2, 3]; } var [b6, b7] = foo(); var [...b8] = foo(); // S is not a tuple- like type and the numeric index signature type of S is assignable to the target given in E. var temp = [1,2,3] var [c0, c1] = [...temp]; var [c2] = []; var [[[c3]], [[[[c4]]]]] = [[[]], [[[[]]]]] var [[c5], c6]: [[string|number], boolean] = [[1], true]; var [, c7] = [1, 2, 3]; var [,,, c8] = [1, 2, 3, 4]; var [,,, c9] = [1, 2, 3, 4]; var [,,,...c10] = [1, 2, 3, 4, "hello"]; var [c11, c12, ...c13] = [1, 2, "string"]; var [c14, c15, c16] = [1, 2, "string"]; //// [destructuringArrayBindingPatternAndAssignment1ES5.js] /* AssignmentPattern: * ObjectAssignmentPattern * ArrayAssignmentPattern * ArrayAssignmentPattern: * [Elision AssignmentRestElementopt ] * [AssignmentElementList] * [AssignmentElementList, Elision AssignmentRestElementopt ] * AssignmentElementList: * Elision AssignmentElement * AssignmentElementList, Elisionopt AssignmentElement * AssignmentElement: * LeftHandSideExpression Initialiseropt * AssignmentPattern Initialiseropt * AssignmentRestElement: * ... LeftHandSideExpression */ // In a destructuring assignment expression, the type of the expression on the right must be assignable to the assignment target on the left. // An expression of type S is considered assignable to an assignment target V if one of the following is true // V is an array assignment pattern, S is the type Any or an array-like type (section 3.3.2), and, for each assignment element E in V, // S is the type Any, or var a0 = undefined[0], a1 = undefined[1]; var _a = undefined[0], a2 = _a === void 0 ? false : _a, _b = undefined[1], a3 = _b === void 0 ? 1 : _b; // V is an array assignment pattern, S is the type Any or an array-like type (section 3.3.2), and, for each assignment element E in V, // S is a tuple- like type (section 3.3.3) with a property named N of a type that is assignable to the target given in E, // where N is the numeric index of E in the array assignment pattern, or var _c = [2, 3, 4], b0 = _c[0], b1 = _c[1], b2 = _c[2]; var _d = [1, 2, "string"], b3 = _d[0], b4 = _d[1], b5 = _d[2]; function foo() { return [1, 2, 3]; } var _e = foo(), b6 = _e[0], b7 = _e[1]; var b8 = foo().slice(0); // S is not a tuple- like type and the numeric index signature type of S is assignable to the target given in E. var temp = [1, 2, 3]; var _f = temp.slice(), c0 = _f[0], c1 = _f[1]; var c2 = [][0]; var _g = [[[]], [[[[]]]]], c3 = _g[0][0][0], c4 = _g[1][0][0][0][0]; var _h = [[1], true], c5 = _h[0][0], c6 = _h[1]; var _j = [1, 2, 3], c7 = _j[1]; var _k = [1, 2, 3, 4], c8 = _k[3]; var _l = [1, 2, 3, 4], c9 = _l[3]; var _m = [1, 2, 3, 4, "hello"], c10 = _m.slice(3); var _o = [1, 2, "string"], c11 = _o[0], c12 = _o[1], c13 = _o.slice(2); var _p = [1, 2, "string"], c14 = _p[0], c15 = _p[1], c16 = _p[2];