Sha256: b8c2e53ee1575f494bb7e077c147402fca982832026e6b065ef2d95601eefd55
Contents?: true
Size: 936 Bytes
Versions: 25
Compression:
Stored size: 936 Bytes
Contents
var wellKnownSymbol = require('../internals/well-known-symbol');
var ITERATOR = wellKnownSymbol('iterator');
var SAFE_CLOSING = false;
try {
var called = 0;
var iteratorWithReturn = {
next: function () {
return { done: !!called++ };
},
'return': function () {
SAFE_CLOSING = true;
}
};
iteratorWithReturn[ITERATOR] = function () {
return this;
};
// eslint-disable-next-line no-throw-literal
Array.from(iteratorWithReturn, function () { throw 2; });
} catch (error) { /* empty */ }
module.exports = function (exec, SKIP_CLOSING) {
if (!SKIP_CLOSING && !SAFE_CLOSING) return false;
var ITERATION_SUPPORT = false;
try {
var object = {};
object[ITERATOR] = function () {
return {
next: function () {
return { done: ITERATION_SUPPORT = true };
}
};
};
exec(object);
} catch (error) { /* empty */ }
return ITERATION_SUPPORT;
};
Version data entries
25 entries across 25 versions & 7 rubygems