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Private members #41773
Description
TypeScript Version: 4.1.2
Search Terms:
Expected behavior:
should throw an error with "target": "ESNext" and # private member
Actual behavior:
Related Issues:
#17535
https://stackoverflow.com/a/45244695/4794368
Code
class A {
#str = 'pr Str'
constructor() {
new A.B(this)
}
private static B = class {
constructor(private a: A) {
console.log(this.a.#str)
}
}
}
test: {
new A
}Output
"use strict";
class A {
constructor() {
this.#str = 'pr Str';
new A.B(this);
}
#str;
}
A.B = class {
constructor(a) {
this.a = a;
console.log(this.a.#str);
}
};
test: {
new A;
}Compiler Options
{
"compilerOptions": {
"noImplicitAny": true,
"strictNullChecks": true,
"strictFunctionTypes": true,
"strictPropertyInitialization": true,
"strictBindCallApply": true,
"noImplicitThis": true,
"noImplicitReturns": true,
"alwaysStrict": true,
"allowUnusedLabels": true,
"esModuleInterop": true,
"declaration": true,
"experimentalDecorators": true,
"emitDecoratorMetadata": true,
"moduleResolution": 2,
"target": "Latest",
"jsx": "React",
"module": "ESNext"
}
}Playground Link: Provided
Activity
RyanCavanaugh commentedon Dec 2, 2020
Why? This code runs without error
qwabra commentedon Dec 2, 2020
Oh, hmm, hmmm but.
But your example is different from the compiler output
RyanCavanaugh commentedon Dec 2, 2020
Not really seeing any argument being made here. Private identifiers have lexical visibility and
#stris inB's containing lexical scope.qwabra commentedon Dec 2, 2020
ok, now i see. but the generated code doesn't work. please look at the output
DanielRosenwasser commentedon Dec 2, 2020
Thanks for clarifying - I opened up #41788 for you.