f166b7ae58
* Fix plugin-transform-block-scoping const violations Fixes #13245 * Replace `a++` with `+a` where const violation * Remove assignment where const violation * Remove assignment for `&&=`, `||=`, `??=` where const violation * Shorten test
63 lines
1.5 KiB
JavaScript
63 lines
1.5 KiB
JavaScript
const state1 = {};
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expect(function() {
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const a = 3;
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let b = 1;
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state1.getA = () => a;
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state1.getB = () => b;
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a += b++;
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}).toThrow('"a" is read-only');
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expect(state1.getA()).toBe(3); // Assignment did not succeed
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expect(state1.getB()).toBe(2); // `b++` was evaluated before error thrown
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const state2 = {};
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expect(function() {
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const a = {
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valueOf() {
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state2.valueOfIsCalled = true;
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}
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};
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state2.a = a;
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state2.getA = () => a;
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state2.getB = () => b;
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let b = 1;
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a += b++;
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}).toThrow('"a" is read-only');
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expect(state2.getA()).toBe(state2.a); // Assignment did not succeed
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expect(state2.getB()).toBe(2); // `b++` was evaluated before error thrown
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expect(state2.valueOfIsCalled).toBe(true); // `a` was read before error thrown
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const state3 = {};
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expect(function() {
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const a = 32;
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let b = 1;
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state3.getA = () => a;
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state3.getB = () => b;
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a >>>= ++b;
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}).toThrow('"a" is read-only');
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expect(state3.getA()).toBe(32); // Assignment did not succeed
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expect(state3.getB()).toBe(2); // `++b` was evaluated before error thrown
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const state4 = {};
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expect(function() {
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const a = 1;
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let b = 1;
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state4.getA = () => a;
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state4.getB = () => b;
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a &&= ++b;
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}).toThrow('"a" is read-only');
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expect(state4.getA()).toBe(1); // Assignment did not succeed
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expect(state4.getB()).toBe(2); // `++b` was evaluated before error thrown
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{
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const a = 1;
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let b = 1;
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a ||= ++b;
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expect(a).toBe(1); // Assignment not made
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expect(b).toBe(1); // `++b` was not evaluated
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}
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