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Component commits: 5810765 Emit defineProperty calls before param prop assignments Note that I restricted this to --useDefineForClassFields is true. Nothing changes when it's off. I think this is the correct fix for a patch release. However, in principal there's nothing wrong with moving parameter property initialisation after property declaration initialisation. It would be Extremely Bad and Wrong to rely on this working: ```ts class C { p = this.q // what is q? constructor(public q: number) { } } ``` But today it does, and probably somebody relies on it without knowing. ec79590 Put parameter property initialiser into defineProperty's value be86355 Merge branch 'master' into fix-defineProperty-parameter-property-emit 8ff59b9 Combine ES5/ESNext into one test
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118 changes: 118 additions & 0 deletions
118
tests/baselines/reference/defineProperty(target=es5).js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,118 @@ | ||
| //// [defineProperty.ts] | ||
| var x: "p" = "p" | ||
| class A { | ||
| a = this.y | ||
| b | ||
| ["computed"] = 13 | ||
| ;[x] = 14 | ||
| m() { } | ||
| constructor(public readonly y: number) { } | ||
| z = this.y | ||
| declare notEmitted; | ||
| } | ||
| class B { | ||
| } | ||
| class C extends B { | ||
| z = this.ka | ||
| constructor(public ka: number) { | ||
| super() | ||
| } | ||
| ki = this.ka | ||
| } | ||
|
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| //// [defineProperty.js] | ||
| var __extends = (this && this.__extends) || (function () { | ||
| var extendStatics = function (d, b) { | ||
| extendStatics = Object.setPrototypeOf || | ||
| ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) || | ||
| function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; }; | ||
| return extendStatics(d, b); | ||
| }; | ||
| return function (d, b) { | ||
| extendStatics(d, b); | ||
| function __() { this.constructor = d; } | ||
| d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __()); | ||
| }; | ||
| })(); | ||
| var _a; | ||
| var x = "p"; | ||
| var A = /** @class */ (function () { | ||
| function A(y) { | ||
| Object.defineProperty(this, "y", { | ||
| enumerable: true, | ||
| configurable: true, | ||
| writable: true, | ||
| value: y | ||
| }); | ||
| Object.defineProperty(this, "a", { | ||
| enumerable: true, | ||
| configurable: true, | ||
| writable: true, | ||
| value: this.y | ||
| }); | ||
| Object.defineProperty(this, "b", { | ||
| enumerable: true, | ||
| configurable: true, | ||
| writable: true, | ||
| value: void 0 | ||
| }); | ||
| Object.defineProperty(this, "computed", { | ||
| enumerable: true, | ||
| configurable: true, | ||
| writable: true, | ||
| value: 13 | ||
| }); | ||
| Object.defineProperty(this, _a, { | ||
| enumerable: true, | ||
| configurable: true, | ||
| writable: true, | ||
| value: 14 | ||
| }); | ||
| Object.defineProperty(this, "z", { | ||
| enumerable: true, | ||
| configurable: true, | ||
| writable: true, | ||
| value: this.y | ||
| }); | ||
| } | ||
| Object.defineProperty(A.prototype, "m", { | ||
| enumerable: false, | ||
| configurable: true, | ||
| writable: true, | ||
| value: function () { } | ||
| }); | ||
| return A; | ||
| }()); | ||
| _a = x; | ||
| var B = /** @class */ (function () { | ||
| function B() { | ||
| } | ||
| return B; | ||
| }()); | ||
| var C = /** @class */ (function (_super) { | ||
| __extends(C, _super); | ||
| function C(ka) { | ||
| var _this = _super.call(this) || this; | ||
| Object.defineProperty(_this, "ka", { | ||
| enumerable: true, | ||
| configurable: true, | ||
| writable: true, | ||
| value: ka | ||
| }); | ||
| Object.defineProperty(_this, "z", { | ||
| enumerable: true, | ||
| configurable: true, | ||
| writable: true, | ||
| value: _this.ka | ||
| }); | ||
| Object.defineProperty(_this, "ki", { | ||
| enumerable: true, | ||
| configurable: true, | ||
| writable: true, | ||
| value: _this.ka | ||
| }); | ||
| return _this; | ||
| } | ||
| return C; | ||
| }(B)); |
65 changes: 65 additions & 0 deletions
65
tests/baselines/reference/defineProperty(target=es5).symbols
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,65 @@ | ||
| === tests/cases/conformance/classes/propertyMemberDeclarations/defineProperty.ts === | ||
| var x: "p" = "p" | ||
| >x : Symbol(x, Decl(defineProperty.ts, 0, 3)) | ||
|
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| class A { | ||
| >A : Symbol(A, Decl(defineProperty.ts, 0, 16)) | ||
|
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| a = this.y | ||
| >a : Symbol(A.a, Decl(defineProperty.ts, 1, 9)) | ||
| >this.y : Symbol(A.y, Decl(defineProperty.ts, 7, 16)) | ||
| >this : Symbol(A, Decl(defineProperty.ts, 0, 16)) | ||
| >y : Symbol(A.y, Decl(defineProperty.ts, 7, 16)) | ||
|
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| b | ||
| >b : Symbol(A.b, Decl(defineProperty.ts, 2, 14)) | ||
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| ["computed"] = 13 | ||
| >["computed"] : Symbol(A["computed"], Decl(defineProperty.ts, 3, 5)) | ||
| >"computed" : Symbol(A["computed"], Decl(defineProperty.ts, 3, 5)) | ||
|
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| ;[x] = 14 | ||
| >[x] : Symbol(A[x], Decl(defineProperty.ts, 5, 5)) | ||
| >x : Symbol(x, Decl(defineProperty.ts, 0, 3)) | ||
|
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| m() { } | ||
| >m : Symbol(A.m, Decl(defineProperty.ts, 5, 13)) | ||
|
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| constructor(public readonly y: number) { } | ||
| >y : Symbol(A.y, Decl(defineProperty.ts, 7, 16)) | ||
|
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| z = this.y | ||
| >z : Symbol(A.z, Decl(defineProperty.ts, 7, 46)) | ||
| >this.y : Symbol(A.y, Decl(defineProperty.ts, 7, 16)) | ||
| >this : Symbol(A, Decl(defineProperty.ts, 0, 16)) | ||
| >y : Symbol(A.y, Decl(defineProperty.ts, 7, 16)) | ||
|
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| declare notEmitted; | ||
| >notEmitted : Symbol(A.notEmitted, Decl(defineProperty.ts, 8, 14)) | ||
| } | ||
| class B { | ||
| >B : Symbol(B, Decl(defineProperty.ts, 10, 1)) | ||
| } | ||
| class C extends B { | ||
| >C : Symbol(C, Decl(defineProperty.ts, 12, 1)) | ||
| >B : Symbol(B, Decl(defineProperty.ts, 10, 1)) | ||
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| z = this.ka | ||
| >z : Symbol(C.z, Decl(defineProperty.ts, 13, 19)) | ||
| >this.ka : Symbol(C.ka, Decl(defineProperty.ts, 15, 16)) | ||
| >this : Symbol(C, Decl(defineProperty.ts, 12, 1)) | ||
| >ka : Symbol(C.ka, Decl(defineProperty.ts, 15, 16)) | ||
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| constructor(public ka: number) { | ||
| >ka : Symbol(C.ka, Decl(defineProperty.ts, 15, 16)) | ||
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| super() | ||
| >super : Symbol(B, Decl(defineProperty.ts, 10, 1)) | ||
| } | ||
| ki = this.ka | ||
| >ki : Symbol(C.ki, Decl(defineProperty.ts, 17, 5)) | ||
| >this.ka : Symbol(C.ka, Decl(defineProperty.ts, 15, 16)) | ||
| >this : Symbol(C, Decl(defineProperty.ts, 12, 1)) | ||
| >ka : Symbol(C.ka, Decl(defineProperty.ts, 15, 16)) | ||
| } | ||
|
|
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