Update tests and baselines

This commit is contained in:
Nathan Shively-Sanders
2017-09-13 15:13:34 -07:00
parent fbdb14833a
commit d2e2faad5c
9 changed files with 41 additions and 262 deletions

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@@ -7,20 +7,20 @@ tests/cases/conformance/types/spread/objectSpreadNegative.ts(25,1): error TS2322
Property 's' is missing in type '{ b: boolean; }'.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(28,36): error TS2300: Duplicate identifier 'b'.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(28,53): error TS2300: Duplicate identifier 'b'.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(35,11): error TS2339: Property 'length' does not exist on type '{}'.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(36,11): error TS2339: Property 'charAt' does not exist on type '{}'.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(39,1): error TS2349: Cannot invoke an expression whose type lacks a call signature. Type '{}' has no compatible call signatures.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(43,12): error TS2339: Property 'b' does not exist on type '{}'.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(49,9): error TS2339: Property 'm' does not exist on type '{ p: number; }'.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(54,11): error TS2339: Property 'a' does not exist on type '{}'.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(58,14): error TS2698: Spread types may only be created from object types.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(61,14): error TS2698: Spread types may only be created from object types.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(75,37): error TS2322: Type '{ a: string; b: string; extra: string; }' is not assignable to type 'A'.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(33,11): error TS2339: Property 'length' does not exist on type '{}'.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(34,11): error TS2339: Property 'charAt' does not exist on type '{}'.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(37,1): error TS2349: Cannot invoke an expression whose type lacks a call signature. Type '{}' has no compatible call signatures.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(41,12): error TS2339: Property 'b' does not exist on type '{}'.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(47,9): error TS2339: Property 'm' does not exist on type '{ p: number; }'.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(52,11): error TS2339: Property 'a' does not exist on type '{}'.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(56,14): error TS2698: Spread types may only be created from object types.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(59,14): error TS2698: Spread types may only be created from object types.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(73,37): error TS2322: Type '{ a: string; b: string; extra: string; }' is not assignable to type 'A'.
Object literal may only specify known properties, and 'extra' does not exist in type 'A'.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(76,7): error TS2322: Type '{ a: string; b: string; extra: string; }' is not assignable to type 'A'.
Object literal may only specify known properties, and 'extra' does not exist in type 'A'.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(78,7): error TS2322: Type '{ a: string; b: string; extra: string; }' is not assignable to type 'A'.
Object literal may only specify known properties, and 'extra' does not exist in type 'A'.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(80,7): error TS2322: Type '{ a: string; b: string; extra: string; }' is not assignable to type 'A'.
Object literal may only specify known properties, and 'extra' does not exist in type 'A'.
==== tests/cases/conformance/types/spread/objectSpreadNegative.ts (17 errors) ====
@@ -69,9 +69,7 @@ tests/cases/conformance/types/spread/objectSpreadNegative.ts(80,7): error TS2322
!!! error TS2300: Duplicate identifier 'b'.
let duplicatedSpread = { ...o, ...o }
// primitives are not allowed
let spreadNum = { ...12 };
let spreadSum = { ...1 + 1 };
// primitives are skipped
let spreadStr = { ...'foo' };
spreadStr.length; // error, no 'length'
~~~~~~

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@@ -29,9 +29,7 @@ spread = b; // error, missing 's'
let duplicated = { b: 'bad', ...o, b: 'bad', ...o2, b: 'bad' }
let duplicatedSpread = { ...o, ...o }
// primitives are not allowed
let spreadNum = { ...12 };
let spreadSum = { ...1 + 1 };
// primitives are skipped
let spreadStr = { ...'foo' };
spreadStr.length; // error, no 'length'
spreadStr.charAt(1); // error, no methods either
@@ -118,9 +116,7 @@ spread = b; // error, missing 's'
// literal repeats are not allowed, but spread repeats are fine
var duplicated = __assign({ b: 'bad' }, o, { b: 'bad' }, o2, { b: 'bad' });
var duplicatedSpread = __assign({}, o, o);
// primitives are not allowed
var spreadNum = __assign({}, 12);
var spreadSum = __assign({}, 1 + 1);
// primitives are skipped
var spreadStr = __assign({}, 'foo');
spreadStr.length; // error, no 'length'
spreadStr.charAt(1); // error, no methods either

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@@ -1,22 +1,13 @@
tests/cases/compiler/restInvalidArgumentType.ts(31,13): error TS2700: Rest types may only be created from object types.
tests/cases/compiler/restInvalidArgumentType.ts(33,13): error TS2700: Rest types may only be created from object types.
tests/cases/compiler/restInvalidArgumentType.ts(35,13): error TS2700: Rest types may only be created from object types.
tests/cases/compiler/restInvalidArgumentType.ts(36,13): error TS2700: Rest types may only be created from object types.
tests/cases/compiler/restInvalidArgumentType.ts(38,13): error TS2700: Rest types may only be created from object types.
tests/cases/compiler/restInvalidArgumentType.ts(41,13): error TS2700: Rest types may only be created from object types.
tests/cases/compiler/restInvalidArgumentType.ts(42,13): error TS2700: Rest types may only be created from object types.
tests/cases/compiler/restInvalidArgumentType.ts(44,13): error TS2700: Rest types may only be created from object types.
tests/cases/compiler/restInvalidArgumentType.ts(45,13): error TS2700: Rest types may only be created from object types.
tests/cases/compiler/restInvalidArgumentType.ts(47,13): error TS2700: Rest types may only be created from object types.
tests/cases/compiler/restInvalidArgumentType.ts(48,13): error TS2700: Rest types may only be created from object types.
tests/cases/compiler/restInvalidArgumentType.ts(55,13): error TS2700: Rest types may only be created from object types.
tests/cases/compiler/restInvalidArgumentType.ts(56,13): error TS2700: Rest types may only be created from object types.
tests/cases/compiler/restInvalidArgumentType.ts(58,13): error TS2700: Rest types may only be created from object types.
tests/cases/compiler/restInvalidArgumentType.ts(18,13): error TS2700: Rest types may only be created from object types.
tests/cases/compiler/restInvalidArgumentType.ts(20,13): error TS2700: Rest types may only be created from object types.
tests/cases/compiler/restInvalidArgumentType.ts(22,13): error TS2700: Rest types may only be created from object types.
tests/cases/compiler/restInvalidArgumentType.ts(23,13): error TS2700: Rest types may only be created from object types.
tests/cases/compiler/restInvalidArgumentType.ts(25,13): error TS2700: Rest types may only be created from object types.
tests/cases/compiler/restInvalidArgumentType.ts(28,13): error TS2700: Rest types may only be created from object types.
tests/cases/compiler/restInvalidArgumentType.ts(30,13): error TS2700: Rest types may only be created from object types.
==== tests/cases/compiler/restInvalidArgumentType.ts (14 errors) ====
enum E { v1, v2 };
==== tests/cases/compiler/restInvalidArgumentType.ts (7 errors) ====
function f<T extends { b: string }>(p1: T, p2: T[]) {
var t: T;
@@ -27,24 +18,13 @@ tests/cases/compiler/restInvalidArgumentType.ts(58,13): error TS2700: Rest types
var mapped: {[P in "b"]: T[P]};
var union_generic: T | { a: number };
var union_primitive: { a: number } | number;
var intersection_generic: T & { a: number };
var intersection_premitive: { a: number } | string;
var num: number;
var str: number;
var u: undefined;
var n: null;
var a: any;
var literal_string: "string";
var literal_number: 42;
var e: E;
var {...r1} = p1; // Error, generic type paramterre
~~
!!! error TS2700: Rest types may only be created from object types.
@@ -68,37 +48,14 @@ tests/cases/compiler/restInvalidArgumentType.ts(58,13): error TS2700: Rest types
var {...r8} = union_generic; // Error, union with generic type parameter
~~
!!! error TS2700: Rest types may only be created from object types.
var {...r9} = union_primitive; // Error, union with generic type parameter
~~
!!! error TS2700: Rest types may only be created from object types.
var {...r10} = intersection_generic; // Error, intersection with generic type parameter
~~~
!!! error TS2700: Rest types may only be created from object types.
var {...r11} = intersection_premitive; // Error, intersection with generic type parameter
~~~
!!! error TS2700: Rest types may only be created from object types.
var {...r12} = num; // Error
~~~
!!! error TS2700: Rest types may only be created from object types.
var {...r13} = str; // Error
~~~
!!! error TS2700: Rest types may only be created from object types.
var {...r14} = u; // OK
var {...r15} = n; // OK
var {...r16} = a; // OK
var {...r17} = literal_string; // Error
~~~
!!! error TS2700: Rest types may only be created from object types.
var {...r18} = literal_number; // Error
~~~
!!! error TS2700: Rest types may only be created from object types.
var {...r19} = e; // Error, enum
~~~
!!! error TS2700: Rest types may only be created from object types.
}
}

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@@ -1,6 +1,4 @@
//// [restInvalidArgumentType.ts]
enum E { v1, v2 };
function f<T extends { b: string }>(p1: T, p2: T[]) {
var t: T;
@@ -11,24 +9,13 @@ function f<T extends { b: string }>(p1: T, p2: T[]) {
var mapped: {[P in "b"]: T[P]};
var union_generic: T | { a: number };
var union_primitive: { a: number } | number;
var intersection_generic: T & { a: number };
var intersection_premitive: { a: number } | string;
var num: number;
var str: number;
var u: undefined;
var n: null;
var a: any;
var literal_string: "string";
var literal_number: 42;
var e: E;
var {...r1} = p1; // Error, generic type paramterre
var {...r2} = p2; // OK
var {...r3} = t; // Error, generic type paramter
@@ -40,24 +27,15 @@ function f<T extends { b: string }>(p1: T, p2: T[]) {
var {...r7} = mapped; // OK, non-generic mapped type
var {...r8} = union_generic; // Error, union with generic type parameter
var {...r9} = union_primitive; // Error, union with generic type parameter
var {...r10} = intersection_generic; // Error, intersection with generic type parameter
var {...r11} = intersection_premitive; // Error, intersection with generic type parameter
var {...r12} = num; // Error
var {...r13} = str; // Error
var {...r14} = u; // OK
var {...r15} = n; // OK
var {...r16} = a; // OK
var {...r17} = literal_string; // Error
var {...r18} = literal_number; // Error
var {...r19} = e; // Error, enum
}
}
//// [restInvalidArgumentType.js]
var __rest = (this && this.__rest) || function (s, e) {
@@ -69,12 +47,6 @@ var __rest = (this && this.__rest) || function (s, e) {
t[p[i]] = s[p[i]];
return t;
};
var E;
(function (E) {
E[E["v1"] = 0] = "v1";
E[E["v2"] = 1] = "v2";
})(E || (E = {}));
;
function f(p1, p2) {
var t;
var i;
@@ -82,17 +54,10 @@ function f(p1, p2) {
var mapped_generic;
var mapped;
var union_generic;
var union_primitive;
var intersection_generic;
var intersection_premitive;
var num;
var str;
var u;
var n;
var a;
var literal_string;
var literal_number;
var e;
var r1 = __rest(p1, []); // Error, generic type paramterre
var r2 = __rest(p2, []); // OK
var r3 = __rest(t, []); // Error, generic type paramter
@@ -101,15 +66,8 @@ function f(p1, p2) {
var r6 = __rest(mapped_generic, []); // Error, generic mapped object type
var r7 = __rest(mapped, []); // OK, non-generic mapped type
var r8 = __rest(union_generic, []); // Error, union with generic type parameter
var r9 = __rest(union_primitive, []); // Error, union with generic type parameter
var r10 = __rest(intersection_generic, []); // Error, intersection with generic type parameter
var r11 = __rest(intersection_premitive, []); // Error, intersection with generic type parameter
var r12 = __rest(num, []); // Error
var r13 = __rest(str, []); // Error
var r14 = __rest(u, []); // OK
var r15 = __rest(n, []); // OK
var r16 = __rest(a, []); // OK
var r17 = __rest(literal_string, []); // Error
var r18 = __rest(literal_number, []); // Error
var r19 = __rest(e, []); // Error, enum
}

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@@ -1,22 +1,13 @@
tests/cases/compiler/spreadInvalidArgumentType.ts(31,16): error TS2698: Spread types may only be created from object types.
tests/cases/compiler/spreadInvalidArgumentType.ts(33,16): error TS2698: Spread types may only be created from object types.
tests/cases/compiler/spreadInvalidArgumentType.ts(35,16): error TS2698: Spread types may only be created from object types.
tests/cases/compiler/spreadInvalidArgumentType.ts(36,16): error TS2698: Spread types may only be created from object types.
tests/cases/compiler/spreadInvalidArgumentType.ts(38,16): error TS2698: Spread types may only be created from object types.
tests/cases/compiler/spreadInvalidArgumentType.ts(41,16): error TS2698: Spread types may only be created from object types.
tests/cases/compiler/spreadInvalidArgumentType.ts(42,16): error TS2698: Spread types may only be created from object types.
tests/cases/compiler/spreadInvalidArgumentType.ts(44,17): error TS2698: Spread types may only be created from object types.
tests/cases/compiler/spreadInvalidArgumentType.ts(45,17): error TS2698: Spread types may only be created from object types.
tests/cases/compiler/spreadInvalidArgumentType.ts(47,17): error TS2698: Spread types may only be created from object types.
tests/cases/compiler/spreadInvalidArgumentType.ts(48,17): error TS2698: Spread types may only be created from object types.
tests/cases/compiler/spreadInvalidArgumentType.ts(55,17): error TS2698: Spread types may only be created from object types.
tests/cases/compiler/spreadInvalidArgumentType.ts(56,17): error TS2698: Spread types may only be created from object types.
tests/cases/compiler/spreadInvalidArgumentType.ts(58,17): error TS2698: Spread types may only be created from object types.
tests/cases/compiler/spreadInvalidArgumentType.ts(19,16): error TS2698: Spread types may only be created from object types.
tests/cases/compiler/spreadInvalidArgumentType.ts(21,16): error TS2698: Spread types may only be created from object types.
tests/cases/compiler/spreadInvalidArgumentType.ts(23,16): error TS2698: Spread types may only be created from object types.
tests/cases/compiler/spreadInvalidArgumentType.ts(24,16): error TS2698: Spread types may only be created from object types.
tests/cases/compiler/spreadInvalidArgumentType.ts(26,16): error TS2698: Spread types may only be created from object types.
tests/cases/compiler/spreadInvalidArgumentType.ts(29,16): error TS2698: Spread types may only be created from object types.
tests/cases/compiler/spreadInvalidArgumentType.ts(31,17): error TS2698: Spread types may only be created from object types.
==== tests/cases/compiler/spreadInvalidArgumentType.ts (14 errors) ====
enum E { v1, v2 };
==== tests/cases/compiler/spreadInvalidArgumentType.ts (7 errors) ====
function f<T extends { b: string }>(p1: T, p2: T[]) {
var t: T;
@@ -27,24 +18,14 @@ tests/cases/compiler/spreadInvalidArgumentType.ts(58,17): error TS2698: Spread t
var mapped: {[P in "b"]: T[P]};
var union_generic: T | { a: number };
var union_primitive: { a: number } | number;
var intersection_generic: T & { a: number };
var intersection_premitive: { a: number } | string;
var num: number;
var str: number;
var u: undefined;
var n: null;
var a: any;
var literal_string: "string";
var literal_number: 42;
var e: E;
var o1 = { ...p1 }; // Error, generic type paramterre
~~~~~
!!! error TS2698: Spread types may only be created from object types.
@@ -68,37 +49,14 @@ tests/cases/compiler/spreadInvalidArgumentType.ts(58,17): error TS2698: Spread t
var o8 = { ...union_generic }; // Error, union with generic type parameter
~~~~~~~~~~~~~~~~
!!! error TS2698: Spread types may only be created from object types.
var o9 = { ...union_primitive }; // Error, union with generic type parameter
~~~~~~~~~~~~~~~~~~
!!! error TS2698: Spread types may only be created from object types.
var o10 = { ...intersection_generic }; // Error, intersection with generic type parameter
~~~~~~~~~~~~~~~~~~~~~~~
!!! error TS2698: Spread types may only be created from object types.
var o11 = { ...intersection_premitive }; // Error, intersection with generic type parameter
~~~~~~~~~~~~~~~~~~~~~~~~~
!!! error TS2698: Spread types may only be created from object types.
var o12 = { ...num }; // Error
~~~~~~
!!! error TS2698: Spread types may only be created from object types.
var o13 = { ...str }; // Error
~~~~~~
!!! error TS2698: Spread types may only be created from object types.
var o14 = { ...u }; // OK
var o15 = { ...n }; // OK
var o16 = { ...a }; // OK
var o17 = { ...literal_string }; // Error
~~~~~~~~~~~~~~~~~
!!! error TS2698: Spread types may only be created from object types.
var o18 = { ...literal_number }; // Error
~~~~~~~~~~~~~~~~~
!!! error TS2698: Spread types may only be created from object types.
var o19 = { ...e }; // Error, enum
~~~~
!!! error TS2698: Spread types may only be created from object types.
}
}

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@@ -1,6 +1,4 @@
//// [spreadInvalidArgumentType.ts]
enum E { v1, v2 };
function f<T extends { b: string }>(p1: T, p2: T[]) {
var t: T;
@@ -11,24 +9,14 @@ function f<T extends { b: string }>(p1: T, p2: T[]) {
var mapped: {[P in "b"]: T[P]};
var union_generic: T | { a: number };
var union_primitive: { a: number } | number;
var intersection_generic: T & { a: number };
var intersection_premitive: { a: number } | string;
var num: number;
var str: number;
var u: undefined;
var n: null;
var a: any;
var literal_string: "string";
var literal_number: 42;
var e: E;
var o1 = { ...p1 }; // Error, generic type paramterre
var o2 = { ...p2 }; // OK
var o3 = { ...t }; // Error, generic type paramter
@@ -40,24 +28,15 @@ function f<T extends { b: string }>(p1: T, p2: T[]) {
var o7 = { ...mapped }; // OK, non-generic mapped type
var o8 = { ...union_generic }; // Error, union with generic type parameter
var o9 = { ...union_primitive }; // Error, union with generic type parameter
var o10 = { ...intersection_generic }; // Error, intersection with generic type parameter
var o11 = { ...intersection_premitive }; // Error, intersection with generic type parameter
var o12 = { ...num }; // Error
var o13 = { ...str }; // Error
var o14 = { ...u }; // OK
var o15 = { ...n }; // OK
var o16 = { ...a }; // OK
var o17 = { ...literal_string }; // Error
var o18 = { ...literal_number }; // Error
var o19 = { ...e }; // Error, enum
}
}
//// [spreadInvalidArgumentType.js]
var __assign = (this && this.__assign) || Object.assign || function(t) {
@@ -68,12 +47,6 @@ var __assign = (this && this.__assign) || Object.assign || function(t) {
}
return t;
};
var E;
(function (E) {
E[E["v1"] = 0] = "v1";
E[E["v2"] = 1] = "v2";
})(E || (E = {}));
;
function f(p1, p2) {
var t;
var i;
@@ -81,17 +54,10 @@ function f(p1, p2) {
var mapped_generic;
var mapped;
var union_generic;
var union_primitive;
var intersection_generic;
var intersection_premitive;
var num;
var str;
var u;
var n;
var a;
var literal_string;
var literal_number;
var e;
var o1 = __assign({}, p1); // Error, generic type paramterre
var o2 = __assign({}, p2); // OK
var o3 = __assign({}, t); // Error, generic type paramter
@@ -100,15 +66,8 @@ function f(p1, p2) {
var o6 = __assign({}, mapped_generic); // Error, generic mapped object type
var o7 = __assign({}, mapped); // OK, non-generic mapped type
var o8 = __assign({}, union_generic); // Error, union with generic type parameter
var o9 = __assign({}, union_primitive); // Error, union with generic type parameter
var o10 = __assign({}, intersection_generic); // Error, intersection with generic type parameter
var o11 = __assign({}, intersection_premitive); // Error, intersection with generic type parameter
var o12 = __assign({}, num); // Error
var o13 = __assign({}, str); // Error
var o14 = __assign({}, u); // OK
var o15 = __assign({}, n); // OK
var o16 = __assign({}, a); // OK
var o17 = __assign({}, literal_string); // Error
var o18 = __assign({}, literal_number); // Error
var o19 = __assign({}, e); // Error, enum
}

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@@ -1,5 +1,3 @@
enum E { v1, v2 };
function f<T extends { b: string }>(p1: T, p2: T[]) {
var t: T;
@@ -10,24 +8,13 @@ function f<T extends { b: string }>(p1: T, p2: T[]) {
var mapped: {[P in "b"]: T[P]};
var union_generic: T | { a: number };
var union_primitive: { a: number } | number;
var intersection_generic: T & { a: number };
var intersection_premitive: { a: number } | string;
var num: number;
var str: number;
var u: undefined;
var n: null;
var a: any;
var literal_string: "string";
var literal_number: 42;
var e: E;
var {...r1} = p1; // Error, generic type paramterre
var {...r2} = p2; // OK
var {...r3} = t; // Error, generic type paramter
@@ -39,21 +26,11 @@ function f<T extends { b: string }>(p1: T, p2: T[]) {
var {...r7} = mapped; // OK, non-generic mapped type
var {...r8} = union_generic; // Error, union with generic type parameter
var {...r9} = union_primitive; // Error, union with generic type parameter
var {...r10} = intersection_generic; // Error, intersection with generic type parameter
var {...r11} = intersection_premitive; // Error, intersection with generic type parameter
var {...r12} = num; // Error
var {...r13} = str; // Error
var {...r14} = u; // OK
var {...r15} = n; // OK
var {...r16} = a; // OK
var {...r17} = literal_string; // Error
var {...r18} = literal_number; // Error
var {...r19} = e; // Error, enum
}
}

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@@ -1,5 +1,3 @@
enum E { v1, v2 };
function f<T extends { b: string }>(p1: T, p2: T[]) {
var t: T;
@@ -10,24 +8,14 @@ function f<T extends { b: string }>(p1: T, p2: T[]) {
var mapped: {[P in "b"]: T[P]};
var union_generic: T | { a: number };
var union_primitive: { a: number } | number;
var intersection_generic: T & { a: number };
var intersection_premitive: { a: number } | string;
var num: number;
var str: number;
var u: undefined;
var n: null;
var a: any;
var literal_string: "string";
var literal_number: 42;
var e: E;
var o1 = { ...p1 }; // Error, generic type paramterre
var o2 = { ...p2 }; // OK
var o3 = { ...t }; // Error, generic type paramter
@@ -39,21 +27,11 @@ function f<T extends { b: string }>(p1: T, p2: T[]) {
var o7 = { ...mapped }; // OK, non-generic mapped type
var o8 = { ...union_generic }; // Error, union with generic type parameter
var o9 = { ...union_primitive }; // Error, union with generic type parameter
var o10 = { ...intersection_generic }; // Error, intersection with generic type parameter
var o11 = { ...intersection_premitive }; // Error, intersection with generic type parameter
var o12 = { ...num }; // Error
var o13 = { ...str }; // Error
var o14 = { ...u }; // OK
var o15 = { ...n }; // OK
var o16 = { ...a }; // OK
var o17 = { ...literal_string }; // Error
var o18 = { ...literal_number }; // Error
var o19 = { ...e }; // Error, enum
}
}

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@@ -29,9 +29,7 @@ spread = b; // error, missing 's'
let duplicated = { b: 'bad', ...o, b: 'bad', ...o2, b: 'bad' }
let duplicatedSpread = { ...o, ...o }
// primitives are not allowed
let spreadNum = { ...12 };
let spreadSum = { ...1 + 1 };
// primitives are skipped
let spreadStr = { ...'foo' };
spreadStr.length; // error, no 'length'
spreadStr.charAt(1); // error, no methods either