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accessing private fields in TDZ should throw a ReferenceError (#2284)

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Joyee Cheung 2019-08-15 00:45:29 +08:00 committed by Leo Balter
parent 568601ddc8
commit 2312e123b8
1 changed files with 30 additions and 3 deletions
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33
test/language/statements/class/elements/private-field-is-visible-in-computed-properties.js
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@ -10,6 +10,10 @@ info: |
2. Let classScope be NewDeclarativeEnvironment(lex). 2. Let classScope be NewDeclarativeEnvironment(lex).
3. Let classScopeEnvRec be classScope's EnvironmentRecord. 3. Let classScopeEnvRec be classScope's EnvironmentRecord.
... ...
8. If ClassBodyopt is present, then
a. For each element dn of the PrivateBoundIdentifiers of ClassBodyopt,
i. Perform classPrivateEnvRec.CreateImmutableBinding(dn, true).
...
15. Set the running execution context's LexicalEnvironment to classScope. 15. Set the running execution context's LexicalEnvironment to classScope.
16. Set the running execution context's PrivateEnvironment to classPrivateEnvironment. 16. Set the running execution context's PrivateEnvironment to classPrivateEnvironment.
... ...
@ -17,13 +21,36 @@ info: |
a. If IsStatic of e is false, then a. If IsStatic of e is false, then
i. Let field be the result of ClassElementEvaluation for e with arguments proto and false. i. Let field be the result of ClassElementEvaluation for e with arguments proto and false.
... ...
MemberExpression : MemberExpression . PrivateIdentifier
...
5. Return MakePrivateReference(bv, fieldNameString).
MakePrivateReference ( baseValue, privateIdentifier )
...
2. Let privateNameBinding be ? ResolveBinding(privateIdentifier, env).
3. Let privateName be GetValue(privateNameBinding).
...
GetValue (V)
...
6. Else,
a. Assert: base is an Environment Record.
b. Return ? base.GetBindingValue(GetReferencedName(V), IsStrictReference(V)).
GetBindingValue ( N, S )
...
3. If the binding for N in envRec is an uninitialized binding, throw a ReferenceError exception.
...
features: [class-fields-private, class] features: [class-fields-private, class]
---*/ ---*/
assert.throws(TypeError, function() { const self = this;
assert.throws(ReferenceError, function() {
class C { class C {
[this.#f] = 'Test262'; [self.#f] = 'Test262';
#f = 'foo'; #f = 'foo';
} }
}, 'access to a not defined private field in object should throw a TypeError'); }, 'access to a not defined private field in object should throw a ReferenceError');