shadow-utils.js
2.14 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
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.buildScopeIIFE = buildScopeIIFE;
exports.collectShadowedParamsNames = collectShadowedParamsNames;
exports.iifeVisitor = void 0;
var _core = require("@babel/core");
const iifeVisitor = {
"ReferencedIdentifier|BindingIdentifier"(path, state) {
const {
scope,
node
} = path;
const {
name
} = node;
if (name === "eval" || scope.getBinding(name) === state.scope.parent.getBinding(name) && state.scope.hasOwnBinding(name)) {
state.needsOuterBinding = true;
path.stop();
}
},
"TypeAnnotation|TSTypeAnnotation|TypeParameterDeclaration|TSTypeParameterDeclaration": path => path.skip()
};
exports.iifeVisitor = iifeVisitor;
function collectShadowedParamsNames(param, functionScope, shadowedParams) {
for (const name of Object.keys(param.getBindingIdentifiers())) {
var _functionScope$bindin;
const constantViolations = (_functionScope$bindin = functionScope.bindings[name]) == null ? void 0 : _functionScope$bindin.constantViolations;
if (constantViolations) {
for (const redeclarator of constantViolations) {
const node = redeclarator.node;
switch (node.type) {
case "VariableDeclarator":
{
if (node.init === null) {
const declaration = redeclarator.parentPath;
if (!declaration.parentPath.isFor() || declaration.parentPath.get("body") === declaration) {
redeclarator.remove();
break;
}
}
shadowedParams.add(name);
break;
}
case "FunctionDeclaration":
shadowedParams.add(name);
break;
}
}
}
}
}
function buildScopeIIFE(shadowedParams, body) {
const args = [];
const params = [];
for (const name of shadowedParams) {
args.push(_core.types.identifier(name));
params.push(_core.types.identifier(name));
}
return _core.types.returnStatement(_core.types.callExpression(_core.types.arrowFunctionExpression(params, body), args));
}
//# sourceMappingURL=shadow-utils.js.map