mirror of https://github.com/tc39/test262.git
95 lines
2.4 KiB
JavaScript
95 lines
2.4 KiB
JavaScript
// This file was procedurally generated from the following sources:
|
||
// - src/function-forms/unscopables-with-in-nested-fn.case
|
||
// - src/function-forms/default/async-arrow-function.template
|
||
/*---
|
||
description: Symbol.unscopables behavior across scope boundaries (async arrow function expression)
|
||
esid: sec-async-arrow-function-definitions
|
||
features: [globalThis, Symbol.unscopables, async-functions]
|
||
flags: [generated, noStrict, async]
|
||
info: |
|
||
14.7 Async Arrow Function Definitions
|
||
|
||
AsyncArrowFunction :
|
||
...
|
||
CoverCallExpressionAndAsyncArrowHead => AsyncConciseBody
|
||
|
||
AsyncConciseBody :
|
||
{ AsyncFunctionBody }
|
||
|
||
...
|
||
|
||
Supplemental Syntax
|
||
|
||
When processing an instance of the production AsyncArrowFunction :
|
||
CoverCallExpressionAndAsyncArrowHead => AsyncConciseBody the interpretation of
|
||
CoverCallExpressionAndAsyncArrowHead is refined using the following grammar:
|
||
|
||
AsyncArrowHead :
|
||
async ArrowFormalParameters
|
||
|
||
|
||
...
|
||
Let envRec be lex's EnvironmentRecord.
|
||
Let exists be ? envRec.HasBinding(name).
|
||
|
||
HasBinding
|
||
|
||
...
|
||
If the withEnvironment flag of envRec is false, return true.
|
||
Let unscopables be ? Get(bindings, @@unscopables).
|
||
If Type(unscopables) is Object, then
|
||
Let blocked be ToBoolean(? Get(unscopables, N)).
|
||
If blocked is true, return false.
|
||
|
||
(The `with` Statement) Runtime Semantics: Evaluation
|
||
|
||
...
|
||
Set the withEnvironment flag of newEnv’s EnvironmentRecord to true.
|
||
...
|
||
|
||
---*/
|
||
let count = 0;
|
||
var v = 1;
|
||
globalThis[Symbol.unscopables] = {
|
||
v: true,
|
||
};
|
||
|
||
{
|
||
count++;
|
||
|
||
|
||
var callCount = 0;
|
||
|
||
// Stores a reference `ref` for case evaluation
|
||
var ref = async (x) => {
|
||
(function() {
|
||
count++;
|
||
with (globalThis) {
|
||
count++;
|
||
assert.sameValue(v, 1, 'The value of `v` is 1');
|
||
}
|
||
})();
|
||
(function() {
|
||
count++;
|
||
var v = x;
|
||
with (globalThis) {
|
||
count++;
|
||
assert.sameValue(v, 10, 'The value of `v` is 10');
|
||
v = 20;
|
||
}
|
||
assert.sameValue(v, 20, 'The value of `v` is 20');
|
||
assert.sameValue(globalThis.v, 1, 'The value of globalThis.v is 1');
|
||
})();
|
||
assert.sameValue(v, 1, 'The value of `v` is 1');
|
||
assert.sameValue(globalThis.v, 1, 'The value of globalThis.v is 1');
|
||
callCount = callCount + 1;
|
||
};
|
||
|
||
ref(10).then(() => {
|
||
assert.sameValue(callCount, 1, 'async arrow function invoked exactly once')
|
||
}).then($DONE, $DONE);
|
||
|
||
count++;
|
||
}
|
||
assert.sameValue(count, 6, 'The value of `count` is 6');
|