index.js
4.44 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _helperPluginUtils = require("@babel/helper-plugin-utils");
var _pluginSyntaxPrivatePropertyInObject = require("@babel/plugin-syntax-private-property-in-object");
var _helperCreateClassFeaturesPlugin = require("@babel/helper-create-class-features-plugin");
var _helperAnnotateAsPure = require("@babel/helper-annotate-as-pure");
var _default = (0, _helperPluginUtils.declare)((api, opt) => {
api.assertVersion(7);
const {
types: t,
template
} = api;
const {
loose
} = opt;
const classWeakSets = new WeakMap();
const fieldsWeakSets = new WeakMap();
function unshadow(name, targetScope, scope) {
while (scope !== targetScope) {
if (scope.hasOwnBinding(name)) scope.rename(name);
scope = scope.parent;
}
}
function injectToFieldInit(fieldPath, expr, before = false) {
if (fieldPath.node.value) {
const value = fieldPath.get("value");
if (before) {
value.insertBefore(expr);
} else {
value.insertAfter(expr);
}
} else {
fieldPath.set("value", t.unaryExpression("void", expr));
}
}
function injectInitialization(classPath, init) {
let firstFieldPath;
let consturctorPath;
for (const el of classPath.get("body.body")) {
if ((el.isClassProperty() || el.isClassPrivateProperty()) && !el.node.static) {
firstFieldPath = el;
break;
}
if (!consturctorPath && el.isClassMethod({
kind: "constructor"
})) {
consturctorPath = el;
}
}
if (firstFieldPath) {
injectToFieldInit(firstFieldPath, init, true);
} else {
(0, _helperCreateClassFeaturesPlugin.injectInitialization)(classPath, consturctorPath, [t.expressionStatement(init)]);
}
}
function getWeakSetId(weakSets, outerClass, reference, name = "", inject) {
let id = weakSets.get(reference.node);
if (!id) {
id = outerClass.scope.generateUidIdentifier(`${name || ""} brandCheck`);
weakSets.set(reference.node, id);
inject(reference, template.expression.ast`${t.cloneNode(id)}.add(this)`);
const newExpr = t.newExpression(t.identifier("WeakSet"), []);
(0, _helperAnnotateAsPure.default)(newExpr);
outerClass.insertBefore(template.ast`var ${id} = ${newExpr}`);
}
return t.cloneNode(id);
}
return {
name: "proposal-private-property-in-object",
inherits: _pluginSyntaxPrivatePropertyInObject.default,
pre() {
(0, _helperCreateClassFeaturesPlugin.enableFeature)(this.file, _helperCreateClassFeaturesPlugin.FEATURES.privateIn, loose);
},
visitor: {
BinaryExpression(path) {
const {
node
} = path;
if (node.operator !== "in") return;
if (!t.isPrivateName(node.left)) return;
const {
name
} = node.left.id;
let privateElement;
const outerClass = path.findParent(path => {
if (!path.isClass()) return false;
privateElement = path.get("body.body").find(({
node
}) => t.isPrivate(node) && node.key.id.name === name);
return !!privateElement;
});
if (outerClass.parentPath.scope.path.isPattern()) {
outerClass.replaceWith(template.ast`(() => ${outerClass.node})()`);
return;
}
if (privateElement.node.type === "ClassPrivateMethod") {
if (privateElement.node.static) {
if (outerClass.node.id) {
unshadow(outerClass.node.id.name, outerClass.scope, path.scope);
} else {
outerClass.set("id", path.scope.generateUidIdentifier("class"));
}
path.replaceWith(template.expression.ast`
${t.cloneNode(outerClass.node.id)} === ${path.node.right}
`);
} else {
var _outerClass$node$id;
const id = getWeakSetId(classWeakSets, outerClass, outerClass, (_outerClass$node$id = outerClass.node.id) == null ? void 0 : _outerClass$node$id.name, injectInitialization);
path.replaceWith(template.expression.ast`${id}.has(${path.node.right})`);
}
} else {
const id = getWeakSetId(fieldsWeakSets, outerClass, privateElement, privateElement.node.key.id.name, injectToFieldInit);
path.replaceWith(template.expression.ast`${id}.has(${path.node.right})`);
}
}
}
};
});
exports.default = _default;