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// Check that we correctly throw SyntaxErrors for various syntactic near-misses.
load(libdir + "asserts.js");
var mistakes = [
"((a)) => expr",
"a + b => a",
"'' + a => a",
"...x",
"[x] => x",
"([x] => x)",
"{p: p} => p",
"({p: p} => p)",
"{p} => p",
"(...x => expr)",
"1 || a => a",
"'use strict' => {}",
"package => {'use strict';}", // tricky: FutureReservedWord in strict mode code only
"'use strict'; arguments => 0", // names banned in strict mode code
"'use strict'; eval => 0",
"a => {'use strict'; with (a) return x; }",
"a => yield a",
"a => { yield a; }",
"a => { { let x; yield a; } }",
"(a = yield 0) => a",
"for (;;) a => { break; };",
"for (;;) a => { continue; };",
"...rest) =>",
"2 + ...rest) =>"
];
for (var s of mistakes)
assertThrowsInstanceOf(function () { Function(s); }, SyntaxError);
// Check that the tricky case is not an error in non-strict-mode code.
var f = package => 0;
assertEq(f(1), 0);