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Ensure non-static decorators are applied when a class is instantiated. #15059

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merged 2 commits into from Oct 19, 2022
Merged

Ensure non-static decorators are applied when a class is instantiated. #15059

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956d234
rename test cases
JLHwung Oct 18, 2022
4bf2018
fix: protoInit call should not be injected to static field initializer
JLHwung Oct 18, 2022
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7 changes: 6 additions & 1 deletion packages/babel-plugin-proposal-decorators/src/transformer-2022-03.ts
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Expand Up @@ -524,6 +524,7 @@ function transformClass(

const elementDecoratorInfo: (DecoratorInfo | ComputedPropInfo)[] = [];

// The initializer of the first non-static field will be injected with the protoInit call
let firstFieldPath:
| NodePath<t.ClassProperty | t.ClassPrivateProperty>
| undefined;
Expand Down Expand Up @@ -767,7 +768,11 @@ function transformClass(
element.node.decorators = null;
}

if (!firstFieldPath && (kind === FIELD || kind === ACCESSOR)) {
if (
!firstFieldPath &&
!isStatic &&
(kind === FIELD || kind === ACCESSOR)
) {
firstFieldPath = element as NodePath<
t.ClassProperty | t.ClassPrivateProperty
>;
Expand Down
67 changes: 67 additions & 0 deletions ...decorators/test/fixtures/2022-03-ordering--to-es2015/accessor-initializers-fields/exec.js
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@@ -0,0 +1,67 @@
var log = [];

function push(x) {
log.push(x);
return x;
}

function logClassDecoratorRun(a, b, c) {
push(a);
return function (el, { addInitializer }) {
push(b);
addInitializer(function () {
push(c);
});
return el;
};
}

function logAccessorDecoratorRun(a, b, c, d) {
push(a);
return function (el, { addInitializer }) {
push(b);
addInitializer(function () {
push(c);
});
return {
init: () => push(d),
};
};
}

function logFieldDecoratorRun(a, b) {
push(a);
return function (el) { push(b); return el; };
}

@logClassDecoratorRun(0, 19, 21)
@logClassDecoratorRun(1, 18, 20)
class A {
@logAccessorDecoratorRun(2, 11, 23, 27)
@logAccessorDecoratorRun(3, 10, 22, 26)
accessor a;

@logFieldDecoratorRun(4, 15)
@logFieldDecoratorRun(5, 14)
b;

@logFieldDecoratorRun(6, 17)
@logFieldDecoratorRun(7, 16)
#c;

@logAccessorDecoratorRun(8, 13, 25, 29)
@logAccessorDecoratorRun(9, 12, 24, 28)
accessor #d;

constructor() {
this.a = this.#d = null;
}
}

var nums = Array.from({ length: 22 }, (_, i) => i);
expect(log).toEqual(nums);

new A();

var nums = Array.from({ length: 30 }, (_, i) => i);
expect(log).toEqual(nums);
75 changes: 75 additions & 0 deletions ...decorators/test/fixtures/2022-03-ordering--to-es2015/accessor-method-initializers/exec.js
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@@ -0,0 +1,75 @@
var log = [];

function push(x) {
log.push(x);
return x;
}

function logClassDecoratorRun(a, b, c) {
push(a);
return function (el, { addInitializer }) {
push(b);
addInitializer(function () {
push(c);
});
return el;
};
}

function logAccessorDecoratorRun(a, b, c, d) {
push(a);
return function (el, { addInitializer }) {
push(b);
addInitializer(function () {
push(c);
});
return {
init: () => push(d),
};
};
}

function logMethodDecoratorRun(a, b, c, d) {
push(a);
return function (el, { addInitializer }) {
push(b);
addInitializer(function () {
push(c);
});
return () => (el(), push(d))
};
}

@logClassDecoratorRun(0, 19, 21)
@logClassDecoratorRun(1, 18, 20)
class A {
@logAccessorDecoratorRun(2, 11, 23, 31)
@logAccessorDecoratorRun(3, 10, 22, 30)
accessor a;

@logMethodDecoratorRun(4, 13, 25, 35)
@logMethodDecoratorRun(5, 12, 24, 34)
b() {};

@logMethodDecoratorRun(6, 15, 27, 37)
@logMethodDecoratorRun(7, 14, 26, 36)
#c() {};

@logAccessorDecoratorRun(8, 17, 29, 33)
@logAccessorDecoratorRun(9, 16, 28, 32)
accessor #d;

constructor() {
this.b();
this.#c();
this.a = this.#d = null;
}
}

var nums = Array.from({ length: 22 }, (_, i) => i);
expect(log).toEqual(nums);

new A();

var nums = Array.from({ length: 38 }, (_, i) => i);
expect(log).toEqual(nums);
3 changes: 3 additions & 0 deletions ...--to-es2015/accessor-initializers/exec.js → ...ssor-static-accessor-initializers/exec.js
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Expand Up @@ -42,6 +42,9 @@ class A {
accessor #d;
}

var nums = Array.from({ length: 30 }, (_, i) => i);
expect(log).toEqual(nums);
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The test here becomes more stringent: we assert that certain log must be printed before the class is instantiated.


new A();

var nums = Array.from({ length: 38 }, (_, i) => i);
Expand Down
77 changes: 77 additions & 0 deletions ...ors/test/fixtures/2022-03-ordering--to-es2015/accessor-static-method-initializers/exec.js
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@@ -0,0 +1,77 @@
var log = [];

function push(x) {
log.push(x);
return x;
}

function logClassDecoratorRun(a, b, c) {
push(a);
return function (el, { addInitializer }) {
push(b);
addInitializer(function () {
push(c);
});
return el;
};
}

function logAccessorDecoratorRun(a, b, c, d) {
push(a);
return function (el, { addInitializer }) {
push(b);
addInitializer(function () {
push(c);
});
return {
init: () => push(d),
};
};
}

function logMethodDecoratorRun(a, b, c, d) {
push(a);
return function (el, { addInitializer }) {
push(b);
addInitializer(function () {
push(c);
});
return () => (el(), push(d))
};
}

@logClassDecoratorRun(0, 19, 29)
@logClassDecoratorRun(1, 18, 28)
class A {
static {
A.b(), A.#c();
}

@logAccessorDecoratorRun(2, 15, 31, 35)
@logAccessorDecoratorRun(3, 14, 30, 34)
accessor a;

@logMethodDecoratorRun(4, 11, 21, 25)
@logMethodDecoratorRun(5, 10, 20, 24)
static b() {};

@logMethodDecoratorRun(6, 13, 23, 27)
@logMethodDecoratorRun(7, 12, 22, 26)
static #c() {};

@logAccessorDecoratorRun(8, 17, 33, 37)
@logAccessorDecoratorRun(9, 16, 32, 36)
accessor #d;

constructor() {
this.a = this.#d = null;
}
}

var nums = Array.from({ length: 30 }, (_, i) => i);
expect(log).toEqual(nums);

new A();

var nums = Array.from({ length: 38 }, (_, i) => i);
expect(log).toEqual(nums);
31 changes: 0 additions & 31 deletions ...l-plugin-proposal-decorators/test/fixtures/2022-03-ordering--to-es2015/decorators/exec.js
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This file was deleted.

0 ...tures/2022-03-ordering/decorators/exec.js → ...2022-03-ordering--to-es2015/field/exec.js
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File renamed without changes.
3 changes: 3 additions & 0 deletions ...plugin-proposal-decorators/test/fixtures/2022-03-ordering--to-es2015/initializers/exec.js
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Expand Up @@ -47,6 +47,9 @@ class A {
accessor #h;
}

var nums = Array.from({ length: 46 }, (_, i) => i);
expect(log).toEqual(nums);

new A();

var nums = Array.from({ length: 54 }, (_, i) => i);
Expand Down
74 changes: 74 additions & 0 deletions ...ors/test/fixtures/2022-03-ordering--to-es2015/static-accessor-method-initializers/exec.js
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@@ -0,0 +1,74 @@
var log = [];

function push(x) {
log.push(x);
return x;
}

function logClassDecoratorRun(a, b, c) {
push(a);
return function (el, { addInitializer }) {
push(b);
addInitializer(function () {
push(c);
});
return el;
};
}

function logAccessorDecoratorRun(a, b, c, d) {
push(a);
return function (el, { addInitializer }) {
push(b);
addInitializer(function () {
push(c);
});
return {
init: () => push(d),
};
};
}

function logMethodDecoratorRun(a, b, c, d) {
push(a);
return function (el, { addInitializer }) {
push(b);
addInitializer(function () {
push(c);
});
return () => (el(), push(d))
};
}

@logClassDecoratorRun(0, 19, 29)
@logClassDecoratorRun(1, 18, 28)
class A {
@logMethodDecoratorRun(2, 15, 31, 35)
@logMethodDecoratorRun(3, 14, 30, 34)
a() {}

@logAccessorDecoratorRun(4, 11, 21, 25)
@logAccessorDecoratorRun(5, 10, 20, 24)
static accessor b;

@logAccessorDecoratorRun(6, 13, 23, 27)
@logAccessorDecoratorRun(7, 12, 22, 26)
static accessor #c;

@logMethodDecoratorRun(8, 17, 33, 37)
@logMethodDecoratorRun(9, 16, 32, 36)
#d() {}

constructor() {
this.a();
this.#d();
}
}

var nums = Array.from({ length: 30 }, (_, i) => i);
expect(log).toEqual(nums);

new A();

var nums = Array.from({ length: 38 }, (_, i) => i);
expect(log).toEqual(nums);