/* (module (func (param i32) (result i32) (i32.add (local.get 0) (local.get 0))) (export "hello" (func 0))) */ var txt = `00 61 73 6d 01 00 00 00 01 06 01 60 01 7f 01 7f 03 02 01 00 07 09 01 05 68 65 6c 6c 6f 00 00 0a 09 01 07 00 20 00 20 00 6a 0b` var bin = new Uint8Array(txt.split(" ").map((x) => parseInt(x, 16))); var mod = new WebAssembly.Module(bin); var ins = new WebAssembly.Instance(mod); assertEq(ins.exports.hello(37), 2*37); assertEq(bin[25], 0x65); // the 'e' in 'hello' bin[25] = 0x85; // bad UTF-8 assertEq(WebAssembly.validate(bin), false); assertThrowsInstanceOf(() => new WebAssembly.Module(bin), WebAssembly.CompileError); assertThrowsInstanceOf(() => wasmEvalText(`(module (import "\u2603" "" (func))) `, {}), TypeError); { let i1 = wasmEvalText(` (module (func (export "\u2603")))`); assertThrowsInstanceOf(() => wasmEvalText(`(module (import "" "\u2603" (func (result i32))))`, { "": { "\u2603": i1.exports['\u2603'] } }), WebAssembly.LinkError); assertThrowsInstanceOf(() => wasmEvalText(`(module (import "\u2603" "" (func (result i32))))`, { "\u2603": { "": i1.exports['\u2603'] } }), WebAssembly.LinkError); }