Status: Assigned
Owner: [email protected]
CC: [email protected], [email protected], [email protected],
[email protected]
Labels: Type-Bug Priority-Medium OS-All Harmony Area-Language
New issue 4394 by [email protected]: Initializers in arrow function formal
parameters may not contain yield expressions
https://code.google.com/p/v8/issues/detail?id=4394
Consider:
// 1
function *g() { (({a=yield})) }
A perfectly valid term. However:
// 2
function *g() { (({a=yield})=>42) }
No longer valid.
Likewise, although this is not valid:
// 3
function *g() { (({a} = 42)) }
This however is:
// 4
function *g() { (({a}=42)=>42) )
But this is not:
// 5
function *g() { (({a}=yield)=>42) )
V8 gets cases (2) and (5) wrong. It needs to detect yield expressions in
initializers in formal parameters and cause them to signal an early syntax
error.
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