cred: isolate scripts in WASI and move RSA signing to AWS-LC

2026-11-06 22:22:49 +00:00
parent 5b3e1393f5
commit 86c5d8a4e4
217 changed files with 155392 additions and 391 deletions
@@ -0,0 +1,49 @@
+export function assert(actual, expected, message) {
+    if (arguments.length === 1)
+        expected = true;
+
+    if (typeof actual === typeof expected) {
+        if (actual === expected) {
+            if (actual !== 0 || (1 / actual) === (1 / expected))
+                return;
+        }
+        if (typeof actual === 'number') {
+            if (isNaN(actual) && isNaN(expected))
+                return;
+        }
+        if (typeof actual === 'object') {
+            if (actual !== null && expected !== null
+            &&  actual.constructor === expected.constructor
+            &&  actual.toString() === expected.toString())
+                return;
+        }
+    }
+    throw Error("assertion failed: got |" + actual + "|" +
+                ", expected |" + expected + "|" +
+                (message ? " (" + message + ")" : ""));
+}
+
+export function assertThrows(err, func)
+{
+    var ex;
+    ex = false;
+    try {
+        func();
+    } catch(e) {
+        ex = true;
+        assert(e instanceof err);
+    }
+    assert(ex, true, "exception expected");
+}
+
+export function assertArrayEquals(a, b)
+{
+    if (!Array.isArray(a) || !Array.isArray(b))
+        return assert(false);
+
+    assert(a.length, b.length);
+
+    a.forEach((value, idx) => {
+        assert(b[idx], value);
+    });
+}
@@ -0,0 +1,16 @@
+import {assert} from "./assert.js"
+
+let caught = 0
+for (let i = 1; i <= 32; i++) {
+    const prefix = "(:?".repeat(i)
+    const suffix = "|)+".repeat(i)
+    const between = "(?:a|)+"
+    try {
+        new RegExp(prefix + between + suffix)
+    } catch (e) {
+        assert(e instanceof SyntaxError)
+        assert(e.message, "out of memory")
+        caught++
+    }
+}
+assert(caught, 12) // subject to change
@@ -0,0 +1,6 @@
+/*---
+flags: [qjs:track-promise-rejections]
+---*/
+
+Promise.reject().catch(() => print('oops'))
+Promise.resolve().then(() => print('ok'))
@@ -0,0 +1,6 @@
+/*---
+flags: [qjs:track-promise-rejections]
+---*/
+
+const error = await Promise.resolve().then(() => Promise.reject('reject')).catch(e => e)
+print('Got this error:', error)
@@ -0,0 +1,7 @@
+/*---
+flags: [qjs:track-promise-rejections]
+---*/
+
+const promise = Promise.reject('reject')
+const error = await Promise.resolve().then(() => promise).catch(e => e)
+print('Got this error:', error)
@@ -0,0 +1,7 @@
+/*---
+flags: [qjs:no-detect-module]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+const undefined = 42 // SyntaxError at global scope
@@ -0,0 +1,4 @@
+/*---
+flags: [qjs:no-detect-module, module]
+---*/
+const undefined = 42 // not a SyntaxError at toplevel module scope
@@ -0,0 +1,4 @@
+/*---
+flags: [qjs:no-detect-module]
+---*/
+{ const undefined = 42 } // not a SyntaxError, not at global scope
@@ -0,0 +1,4 @@
+/*---
+flags: [qjs:no-detect-module]
+---*/
+;(function() { const undefined = 42 })() // not a SyntaxError, not at global scope
@@ -0,0 +1,4 @@
+"use strict";
+
+const u8 = new Uint8Array(1);
+u8[100] = 123; // Should not throw.
@@ -0,0 +1,9 @@
+import { assert, assertThrows } from "../assert.js";
+const ab = new ArrayBuffer(1);
+const u8 = new Uint8Array(ab);
+assert(!ab.detached);
+// Detach the ArrayBuffer.
+ab.transfer();
+assert(ab.detached);
+u8[100] = 123; // Doesn't throw.
+assertThrows(TypeError, () => Object.defineProperty(u8, "100", { value: 123 }));
@@ -0,0 +1,7 @@
+import { assert, assertThrows } from "../assert.js";
+const ab = new ArrayBuffer(16, { maxByteLength: 32 });
+const u8 = new Uint8Array(ab, 16);
+ab.resize(8);
+assert(ab.byteLength, 8);
+u8[1] = 123; // Doesn't throw.
+assertThrows(TypeError, () => Object.defineProperty(u8, "1", { value: 123 }));
@@ -0,0 +1,13 @@
+/*---
+negative:
+  phase: runtime
+  type: Error
+---*/
+let finrec = new FinalizationRegistry(v => {})
+let object = {object:"object"}
+finrec.register(object, {held:"held"}, {token:"token"})
+object = undefined
+// abrupt termination should not leak |held|
+// unfortunately only shows up in qjs, not run-test262,
+// but still good to have a regression test
+throw Error("ok")
@@ -0,0 +1,4 @@
+import { assert } from "./assert.js"
+const ref = new WeakRef({})
+const val = ref.deref() // should not throw
+assert(val, undefined)
@@ -0,0 +1,19 @@
+import {assert} from "./assert.js"
+
+while (1) label: break
+
+var i = 0
+while (i < 3) label: {
+    if (i > 0)
+        break
+    i++
+}
+assert(i, 1)
+
+for (;;) label: break
+
+for (i = 0; i < 3; i++) label: {
+    if (i > 0)
+        break
+}
+assert(i, 1)
@@ -0,0 +1,7 @@
+/*---
+negative:
+  phase: runtime
+  type: RangeError
+---*/
+function f() { f() } // was problematic under ASan
+f()
@@ -0,0 +1,7 @@
+/*---
+negative:
+  phase: runtime
+  type: RangeError
+---*/
+function f() { f.apply(null) } // was problematic under ASan
+f()
@@ -0,0 +1,2 @@
+const m = await import("./empty.js")
+print(m) // should not throw
@@ -0,0 +1,26 @@
+import {assert} from "./assert.js";
+
+Error.stackTraceLimit = Infinity;
+assert(Error.stackTraceLimit === Infinity);
+assert(new Error("error").stack.includes("bug858.js")); // stack should not be empty
+
+Error.stackTraceLimit = -Infinity;
+assert(Error.stackTraceLimit === -Infinity);
+assert(!new Error("error").stack.includes("bug858.js")); // stack should be empty
+
+Error.stackTraceLimit = NaN;
+assert(Number.isNaN(Error.stackTraceLimit));
+assert(!new Error("error").stack.includes("bug858.js")); // stack should be empty
+
+Error.stackTraceLimit = -0;
+assert(Object.is(Error.stackTraceLimit, -0));
+assert(!new Error("error").stack.includes("bug858.js")); // stack should be empty
+
+const obj = { valueOf() { throw "evil" } };
+Error.stackTraceLimit = obj;
+assert(Error.stackTraceLimit === obj);
+try {
+  throw new Error("fail")
+} catch (e) {
+  assert(e.message.includes("fail"));
+}
@@ -0,0 +1,6 @@
+import {assert, assertThrows} from "./assert.js"
+let calls = 0
+Error.prepareStackTrace = function() { calls++ }
+function f() { f() }
+assertThrows(RangeError, f)
+assert(calls, 0)
@@ -0,0 +1,7 @@
+import {assert} from  "./assert.js"
+const expected = [97,98,99]
+const ab = new ArrayBuffer(0, {maxByteLength:3})
+const dv = new DataView(ab)
+ab.resize(3)
+for (const [i,v] of Object.entries(expected)) dv.setUint8(i, v)
+for (const [i,v] of Object.entries(expected)) assert(v, dv.getUint8(i))
@@ -0,0 +1,3 @@
+function* f(r){ return r } // must return r
+[...f({})]
+
@@ -0,0 +1,8 @@
+import { assert, assertArrayEquals } from "./assert.js";
+import * as mod from "./destructured-export.js";
+
+export const { a, b, c } = { a: 1, b: 2, c: 3 };
+export const d = 4;
+
+assert(typeof mod === 'object');
+assertArrayEquals(Object.keys(mod), ["a", "b", "c", "d"]);
@@ -0,0 +1 @@
+await undefined
@@ -0,0 +1,2 @@
+const p = Promise.resolve(42)
+await p
@@ -0,0 +1 @@
+await = 42 // parsed as classic script
@@ -0,0 +1,8 @@
+/*---
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+// the import statement makes it a module but `await = 42` is a SyntaxError
+import * as _ from "dummy"
+await = 42
@@ -0,0 +1,3 @@
+// imports should classify it as a module, even when not at the top
+os.now()
+import * as os from "qjs:os"
@@ -0,0 +1,2 @@
+import * as a from "./test_cyclic_import.js"
+export function f(x) { return 2 * a.g(x) }
@@ -0,0 +1,12 @@
+// ES2020 string export names test fixture
+export const regularExport = "regular";
+const value1 = "value-1";
+const value2 = "value-2";
+
+// String export names (ES2020)
+export { value1 as "string-export-1" };
+export { value2 as "string-export-2" };
+
+// Mixed: regular and string exports
+const mixed = "mixed-value";
+export { mixed as normalName, mixed as "string-name" };
@@ -0,0 +1,14 @@
+"use strict"
+const expect = "function f() { return 42 }"
+function f() { return 42 }
+
+{
+    const actual = f.toString()
+    if (actual !== expect) throw Error(actual)
+}
+
+{
+    const f = eval(expect + "f")
+    const actual = f.toString()
+    if (actual !== expect) throw Error(actual)
+}
@@ -0,0 +1,38 @@
+import {assert} from "./assert.js"
+
+let ex
+try {
+    null.x
+} catch (e) {
+    ex = e
+}
+assert(ex instanceof TypeError)
+assert(ex.message, "cannot read property 'x' of null")
+ex = undefined
+
+try {
+    null["x"]
+} catch (e) {
+    ex = e
+}
+assert(ex instanceof TypeError)
+assert(ex.message, "cannot read property 'x' of null")
+ex = undefined
+
+try {
+    undefined.x
+} catch (e) {
+    ex = e
+}
+assert(ex instanceof TypeError)
+assert(ex.message, "cannot read property 'x' of undefined")
+ex = undefined
+
+try {
+    undefined["x"]
+} catch (e) {
+    ex = e
+}
+assert(ex instanceof TypeError)
+assert(ex.message, "cannot read property 'x' of undefined")
+ex = undefined
@@ -0,0 +1,5 @@
+var v1 = '';
+try {
+    var v2 = v1.padEnd(2147483620, 0);
+} catch(_) {}
+
@@ -0,0 +1,107 @@
+import { assert, assertThrows } from "./assert.js";
+
+
+function bigint_pow(a, n)
+{
+    var r, i;
+    r = 1n;
+    for(i = 0n; i < n; i++)
+        r *= a;
+    return r;
+}
+
+/* a must be < b */
+function test_less(a, b)
+{
+    assert(a < b);
+    assert(!(b < a));
+    assert(a <= b);
+    assert(!(b <= a));
+    assert(b > a);
+    assert(!(a > b));
+    assert(b >= a);
+    assert(!(a >= b));
+    assert(a != b);
+    assert(!(a == b));
+}
+
+/* a must be numerically equal to b */
+function test_eq(a, b)
+{
+    assert(a == b);
+    assert(b == a);
+    assert(!(a != b));
+    assert(!(b != a));
+    assert(a <= b);
+    assert(b <= a);
+    assert(!(a < b));
+    assert(a >= b);
+    assert(b >= a);
+    assert(!(a > b));
+}
+
+function test_bigint1()
+{
+    var a, r;
+
+    test_less(2n, 3n);
+    test_eq(3n, 3n);
+
+    test_less(2, 3n);
+    test_eq(3, 3n);
+
+    test_less(2.1, 3n);
+    test_eq(Math.sqrt(4), 2n);
+
+    a = bigint_pow(3n, 100n);
+    assert((a - 1n) != a);
+    assert(a, 515377520732011331036461129765621272702107522001n);
+    assert(a, 0x5a4653ca673768565b41f775d6947d55cf3813d1n);
+
+    r = 1n << 31n;
+    assert(r, 2147483648n, "1 << 31n === 2147483648n");
+
+    r = 1n << 32n;
+    assert(r, 4294967296n, "1 << 32n === 4294967296n");
+
+    assert(String(-9223372036854775808n), "-9223372036854775808");
+}
+
+function test_bigint2()
+{
+    assert(BigInt(""), 0n);
+    assert(BigInt("  123"), 123n);
+    assert(BigInt("  123   "), 123n);
+    assertThrows(SyntaxError, () => { BigInt("+") } );
+    assertThrows(SyntaxError, () => { BigInt("-") } );
+    assertThrows(SyntaxError, () => { BigInt("\x00a") } );
+    assertThrows(SyntaxError, () => { BigInt("  123  r") } );
+}
+
+function test_bigint_map()
+{
+    var m = new Map();
+    assert(m.size, 0);
+
+    for (let i = 0n; i < 1337n; i++) {
+        const r = m.set(i, i.toString());
+        assert(r, m);
+    }
+    assert(m.size, 1337);
+
+    for (let i = 0n; i < 1337n; i++) {
+        const r = m.get(i);
+        assert(r, i.toString());
+    }
+    assert(m.get(1337n), undefined);
+    assert(m.size, 1337);
+
+    for (let i = 0n; i < 1337n; i++)
+        assert(m.delete(i));
+    assert(!m.delete(1337n));
+    assert(m.size, 0);
+}
+
+test_bigint1();
+test_bigint2();
+test_bigint_map();
@@ -0,0 +1,341 @@
+import * as std from "qjs:std";
+import * as bjson from "qjs:bjson";
+import { assert } from "./assert.js";
+
+function base64decode(s) {
+    var A = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+    var n = s.indexOf("=");
+    if (n < 0) n = s.length;
+    if (n & 3 === 1) throw Error("bad base64"); // too much padding
+    var r = new Uint8Array(3 * (n>>2) + (n>>1 & 1) + (n & 1));
+    var a, b, c, d, i, j;
+    a = b = c = d = i = j = 0;
+    while (i+3 < n) {
+        a = A.indexOf(s[i++]);
+        b = A.indexOf(s[i++]);
+        c = A.indexOf(s[i++]);
+        d = A.indexOf(s[i++]);
+        if (~63 & (a|b|c|d)) throw Error("bad base64");
+        r[j++] = a<<2 | b>>4;
+        r[j++] = 255 & b<<4 | c>>2;
+        r[j++] = 255 & c<<6 | d;
+    }
+    switch (n & 3) {
+    case 2:
+        a = A.indexOf(s[i++]);
+        b = A.indexOf(s[i++]);
+        if (~63 & (a|b)) throw Error("bad base64");
+        if (b & 15) throw Error("bad base64");
+        r[j++] = a<<2 | b>>4;
+        break;
+    case 3:
+        a = A.indexOf(s[i++]);
+        b = A.indexOf(s[i++]);
+        c = A.indexOf(s[i++]);
+        if (~63 & (a|b|c)) throw Error("bad base64");
+        if (c & 3) throw Error("bad base64");
+        r[j++] = a<<2 | b>>4;
+        r[j++] = 255 & b<<4 | c>>2;
+        break;
+    }
+    return r.buffer;
+}
+
+function toHex(a)
+{
+    var i, s = "", tab, v;
+    tab = new Uint8Array(a);
+    for(i = 0; i < tab.length; i++) {
+        v = tab[i].toString(16);
+        if (v.length < 2)
+            v = "0" + v;
+        if (i !== 0)
+            s += " ";
+        s += v;
+    }
+    return s;
+}
+
+function isArrayLike(a)
+{
+    return Array.isArray(a) ||
+        (a instanceof Uint8ClampedArray) ||
+        (a instanceof Uint8Array) ||
+        (a instanceof Uint16Array) ||
+        (a instanceof Uint32Array) ||
+        (a instanceof Int8Array) ||
+        (a instanceof Int16Array) ||
+        (a instanceof Int32Array) ||
+        (a instanceof Float16Array) ||
+        (a instanceof Float32Array) ||
+        (a instanceof Float64Array);
+}
+
+function toStr(a)
+{
+    var s, i, props, prop;
+
+    switch(typeof(a)) {
+    case "object":
+        if (a === null)
+            return "null";
+        if (a instanceof Date) {
+            s = "Date(" + toStr(a.valueOf()) + ")";
+        } else if (a instanceof Number) {
+            s = "Number(" + toStr(a.valueOf()) + ")";
+        } else if (a instanceof String) {
+            s = "String(" + toStr(a.valueOf()) + ")";
+        } else if (a instanceof Boolean) {
+            s = "Boolean(" + toStr(a.valueOf()) + ")";
+        } else if (isArrayLike(a)) {
+            s = "[";
+            for(i = 0; i < a.length; i++) {
+                if (i != 0)
+                    s += ",";
+                s += toStr(a[i]);
+            }
+            s += "]";
+        } else {
+            props = Object.keys(a);
+            s = "{";
+            for(i = 0; i < props.length; i++) {
+                if (i != 0)
+                    s += ",";
+                prop = props[i];
+                s += prop + ":" + toStr(a[prop]);
+            }
+            s += "}";
+        }
+        return s;
+    case "undefined":
+        return "undefined";
+    case "string":
+        return JSON.stringify(a);
+    case "number":
+        if (a == 0 && 1 / a < 0)
+            return "-0";
+        else
+            return a.toString();
+        break;
+    default:
+        return a.toString();
+    }
+}
+
+function bjson_test(a)
+{
+    var buf, r, a_str, r_str;
+    a_str = toStr(a);
+    buf = bjson.write(a);
+    if (0) {
+        print(a_str, "->", toHex(buf));
+    }
+    r = bjson.read(buf, 0, buf.byteLength);
+    r_str = toStr(r);
+    if (a_str != r_str) {
+        print(a_str);
+        print(r_str);
+        assert(false);
+    }
+}
+
+function bjson_test_arraybuffer()
+{
+    var buf, array_buffer;
+
+    array_buffer = new ArrayBuffer(4);
+    assert(array_buffer.byteLength, 4);
+    assert(array_buffer.maxByteLength, 4);
+    assert(array_buffer.resizable, false);
+    buf = bjson.write(array_buffer);
+    array_buffer = bjson.read(buf, 0, buf.byteLength);
+    assert(array_buffer.byteLength, 4);
+    assert(array_buffer.maxByteLength, 4);
+    assert(array_buffer.resizable, false);
+
+    array_buffer = new ArrayBuffer(4, {maxByteLength: 4});
+    assert(array_buffer.byteLength, 4);
+    assert(array_buffer.maxByteLength, 4);
+    assert(array_buffer.resizable, true);
+    buf = bjson.write(array_buffer);
+    array_buffer = bjson.read(buf, 0, buf.byteLength);
+    assert(array_buffer.byteLength, 4);
+    assert(array_buffer.maxByteLength, 4);
+    assert(array_buffer.resizable, true);
+
+    array_buffer = new ArrayBuffer(4, {maxByteLength: 8});
+    assert(array_buffer.byteLength, 4);
+    assert(array_buffer.maxByteLength, 8);
+    assert(array_buffer.resizable, true);
+    buf = bjson.write(array_buffer);
+    array_buffer = bjson.read(buf, 0, buf.byteLength);
+    assert(array_buffer.byteLength, 4);
+    assert(array_buffer.maxByteLength, 8);
+    assert(array_buffer.resizable, true);
+}
+
+/* test multiple references to an object including circular
+   references */
+function bjson_test_reference()
+{
+    var array, buf, i, n, array_buffer;
+    n = 16;
+    array = [];
+    for(i = 0; i < n; i++)
+        array[i] = {};
+    array_buffer = new ArrayBuffer(n);
+    for(i = 0; i < n; i++) {
+        array[i].next = array[(i + 1) % n];
+        array[i].idx = i;
+        array[i].typed_array = new Uint8Array(array_buffer, i, 1);
+    }
+    buf = bjson.write(array, bjson.WRITE_OBJ_REFERENCE);
+
+    array = bjson.read(buf, 0, buf.byteLength, bjson.READ_OBJ_REFERENCE);
+
+    /* check the result */
+    for(i = 0; i < n; i++) {
+        assert(array[i].next, array[(i + 1) % n]);
+        assert(array[i].idx, i);
+        assert(array[i].typed_array.buffer, array_buffer);
+        assert(array[i].typed_array.length, 1);
+        assert(array[i].typed_array.byteOffset, i);
+    }
+}
+
+function bjson_test_regexp()
+{
+    var buf, r;
+
+    bjson_test(/xyzzy/);
+    bjson_test(/xyzzy/digu);
+
+    buf = bjson.write(/(?<𝓓𝓸𝓰>dog)/);
+    r = bjson.read(buf, 0, buf.byteLength);
+    assert("sup dog".match(r).groups["𝓓𝓸𝓰"], "dog");
+}
+
+function bjson_test_map()
+{
+    var buf, r, xs;
+
+    xs = [["key", "value"]];
+    buf = bjson.write(new Map(xs));
+    r = bjson.read(buf, 0, buf.byteLength);
+    assert(r instanceof Map);
+    assert([...r].toString(), xs.toString());
+}
+
+function bjson_test_set()
+{
+    var buf, r, xs;
+
+    xs = ["one", "two", "three"];
+    buf = bjson.write(new Set(xs));
+    r = bjson.read(buf, 0, buf.byteLength);
+    assert(r instanceof Set);
+    assert([...r].toString(), xs.toString());
+}
+
+function bjson_test_symbol()
+{
+    var buf, r, o;
+
+    o = {[Symbol.toStringTag]: "42"};
+    buf = bjson.write(o);
+    r = bjson.read(buf, 0, buf.byteLength);
+    assert(o.toString(), r.toString());
+
+    o = Symbol('foo');
+    buf = bjson.write(o);
+    r = bjson.read(buf, 0, buf.byteLength);
+    assert(o.toString(), r.toString());
+    assert(o !== r);
+
+    o = Symbol.for('foo');
+    buf = bjson.write(o);
+    r = bjson.read(buf, 0, buf.byteLength);
+    assert(o, r);
+
+    o = Symbol.toStringTag;
+    buf = bjson.write(o);
+    r = bjson.read(buf, 0, buf.byteLength);
+    assert(o, r);
+}
+
+function bjson_test_bytecode()
+{
+    var buf, o, r, e, i;
+
+    o = std.evalScript(";(function f(o){ return o.i })", {compile_only: true});
+    buf = bjson.write(o, /*JS_WRITE_OBJ_BYTECODE*/(1 << 0));
+    try {
+        bjson.read(buf, 0, buf.byteLength);
+    } catch (_e) {
+        e = _e;
+    }
+    assert(String(e), "SyntaxError: no bytecode allowed");
+
+    o = bjson.read(buf, 0, buf.byteLength, /*JS_READ_OBJ_BYTECODE*/(1 << 0));
+    assert(String(o), "[function bytecode]");
+    o = std.evalScript(o, {eval_function: true});
+    for (i = 0; i < 42; i++) o({i}); // exercise o.i IC
+}
+
+function bjson_test_fuzz()
+{
+    var corpus = [
+        "FRAAAAAABGA=",
+        "Febm5oIt",
+        "FQARABMGBgYGBgYGBgYGBv////8QABEALxH/vy8R/78=",
+        "FQAIfwAK/////3//////////////////////////////3/8AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAAAAAD5+fn5+fn5+fn5+fkAAAAAAAYAqw==",
+    ];
+    for (var input of corpus) {
+        var buf = base64decode(input);
+        try {
+            bjson.read(buf, 0, buf.byteLength);
+        } catch (e) {
+            if (/invalid version/.test(e.message)) throw e; // corpus needs update
+        }
+    }
+}
+
+function bjson_test_all()
+{
+    var obj;
+
+    bjson_test({x:1, y:2, if:3});
+    bjson_test([1, 2, 3]);
+    bjson_test([1.0, "aa", true, false, undefined, null, NaN, -Infinity, -0.0]);
+    if (typeof BigInt !== "undefined") {
+        bjson_test([BigInt("1"), -BigInt("0x123456789"),
+               BigInt("0x123456789abcdef123456789abcdef")]);
+    }
+
+    bjson_test([new Date(1234), new String("abc"), new Number(-12.1), new Boolean(true)]);
+
+    bjson_test(new Int32Array([123123, 222111, -32222]));
+    bjson_test(new Float16Array([1024, 1024.5]));
+    bjson_test(new Float64Array([123123, 222111.5]));
+
+    /* tested with a circular reference */
+    obj = {};
+    obj.x = obj;
+    try {
+        bjson.write(obj);
+        assert(false);
+    } catch(e) {
+        assert(e instanceof TypeError);
+    }
+
+    bjson_test_arraybuffer();
+    bjson_test_reference();
+    bjson_test_regexp();
+    bjson_test_map();
+    bjson_test_set();
+    bjson_test_symbol();
+    bjson_test_bytecode();
+    bjson_test_fuzz();
+}
+
+bjson_test_all();
@@ -0,0 +1,220 @@
+// This test cannot use imports because it needs to run in non-strict mode.
+
+function assert(actual, expected, message) {
+    if (arguments.length == 1)
+        expected = true;
+
+    if (actual === expected)
+        return;
+
+    if (actual !== null && expected !== null
+    &&  typeof actual == 'object' && typeof expected == 'object'
+    &&  actual.toString() === expected.toString())
+        return;
+
+    throw Error("assertion failed: got |" + actual + "|" +
+                ", expected |" + expected + "|" +
+                (message ? " (" + message + ")" : ""));
+}
+
+/*----------------*/
+
+var log_str = "";
+
+function log(str)
+{
+    log_str += str + ",";
+}
+
+function f(a, b, c)
+{
+    var x = 10;
+    log("a="+a);
+    function g(d) {
+        function h() {
+            log("d=" + d);
+            log("x=" + x);
+        }
+        log("b=" + b);
+        log("c=" + c);
+        h();
+    }
+    g(4);
+    return g;
+}
+
+var g1 = f(1, 2, 3);
+g1(5);
+
+assert(log_str, "a=1,b=2,c=3,d=4,x=10,b=2,c=3,d=5,x=10,", "closure1");
+
+function test_closure1()
+{
+    function f2()
+    {
+        var val = 1;
+
+        function set(a) {
+            val = a;
+        }
+        function get(a) {
+            return val;
+        }
+        return { "set": set, "get": get };
+    }
+
+    var obj = f2();
+    obj.set(10);
+    var r;
+    r = obj.get();
+    assert(r, 10, "closure2");
+}
+
+function test_closure2()
+{
+    var expr_func = function myfunc1(n) {
+        function myfunc2(n) {
+            return myfunc1(n - 1);
+        }
+        if (n == 0)
+            return 0;
+        else
+            return myfunc2(n);
+    };
+    var r;
+    r = expr_func(1);
+    assert(r, 0, "expr_func");
+}
+
+function test_closure3()
+{
+    function fib(n)
+    {
+        if (n <= 0)
+            return 0;
+        else if (n == 1)
+            return 1;
+        else
+            return fib(n - 1) + fib(n - 2);
+    }
+
+    var fib_func = function fib1(n)
+    {
+        if (n <= 0)
+            return 0;
+        else if (n == 1)
+            return 1;
+        else
+            return fib1(n - 1) + fib1(n - 2);
+    };
+
+    assert(fib(6), 8, "fib");
+    assert(fib_func(6), 8, "fib_func");
+}
+
+function test_arrow_function()
+{
+    "use strict";
+
+    function f1() {
+        return (() => arguments)();
+    }
+    function f2() {
+        return (() => this)();
+    }
+    function f3() {
+        return (() => eval("this"))();
+    }
+    function f4() {
+        return (() => eval("new.target"))();
+    }
+    var a;
+
+    a = f1(1, 2);
+    assert(a.length, 2);
+    assert(a[0] === 1 && a[1] === 2);
+
+    assert(f2.call("this_val"), "this_val");
+    assert(f3.call("this_val"), "this_val");
+    assert(new f4(), f4);
+
+    var o1 = { f() { return this; } };
+    var o2 = { f() {
+        return (() => eval("super.f()"))();
+    } };
+    o2.__proto__ = o1;
+
+    assert(o2.f(), o2);
+}
+
+function test_with()
+{
+    var o1 = { x: "o1", y: "o1" };
+    var x = "local";
+    eval('var z="var_obj";');
+    assert(z, "var_obj");
+    with (o1) {
+        assert(x, "o1");
+        assert(eval("x"), "o1");
+        var f = function () {
+            o2 = { x: "o2" };
+            with (o2) {
+                assert(x, "o2");
+                assert(y, "o1");
+                assert(z, "var_obj");
+                assert(eval("x"), "o2");
+                assert(eval("y"), "o1");
+                assert(eval("z"), "var_obj");
+                assert(eval('eval("x")'), "o2");
+            }
+        };
+        f();
+    }
+}
+
+function test_eval_closure()
+{
+    var tab;
+
+    tab = [];
+    for(let i = 0; i < 3; i++) {
+        eval("tab.push(function g1() { return i; })");
+    }
+    for(let i = 0; i < 3; i++) {
+        assert(tab[i](), i);
+    }
+
+    tab = [];
+    for(let i = 0; i < 3; i++) {
+        let f = function f() {
+            eval("tab.push(function g2() { return i; })");
+        };
+        f();
+    }
+    for(let i = 0; i < 3; i++) {
+        assert(tab[i](), i);
+    }
+}
+
+function test_eval_const()
+{
+    const a = 1;
+    var success = false;
+    var f = function () {
+        eval("a = 1");
+    };
+    try {
+        f();
+    } catch(e) {
+        success = (e instanceof TypeError);
+    }
+    assert(success);
+}
+
+test_closure1();
+test_closure2();
+test_closure3();
+test_arrow_function();
+test_with();
+test_eval_closure();
+test_eval_const();
@@ -0,0 +1,12 @@
+/*---
+negative:
+  phase: resolution
+  type: SyntaxError
+---*/
+// FIXME(bnoordhuis) shouldn't throw SyntaxError but that's still better
+// than segfaulting, see https://github.com/quickjs-ng/quickjs/issues/567
+import {assert} from "./assert.js"
+import {f} from "./fixture_cyclic_import.js"
+export {f}
+export function g(x) { return x + 1 }
+assert(f(1), 4)
@@ -0,0 +1,35 @@
+import { assert, assertThrows } from "./assert.js";
+
+function test_code() {
+	let ex = new DOMException();
+	assert(ex.code, 0);
+	ex = new DOMException("", "HierarchyRequestError\0test");
+	assert(ex.code, 0);
+	ex = new DOMException("test", "HierarchyRequestError");
+	assert(ex.code, 3);
+	assert(ex.code, ex.HIERARCHY_REQUEST_ERR);
+	assert(ex.code, DOMException.HIERARCHY_REQUEST_ERR);
+	ex = new DOMException("", "DataCloneError");
+	assert(ex.code, ex.DATA_CLONE_ERR);
+	assert(ex.code, 25);
+	ex = new DOMException("", "IndexSizeError");
+	assert(ex.code, ex.INDEX_SIZE_ERR);
+	assert(ex.code, 1);
+}
+
+function test_properties() {
+	let ex = new DOMException("test");
+	assert(ex.message, "test");
+	assert(ex.name, "Error");
+	ex = new DOMException("test", "InvalidCharacterError");
+	assert(ex.name, "InvalidCharacterError");
+	assertThrows(TypeError, () => ex.message = "");
+	assertThrows(TypeError, () => ex.name = "test");
+	assert(ex.__proto__, DOMException.prototype);
+	/* Note: browsers set "stack" on the prototype, not the object.
+	 * This follows node. */
+	assert(Object.getOwnPropertyNames(ex), ["stack"]);
+}
+
+test_code();
+test_properties();
@@ -0,0 +1,748 @@
+// This test cannot use imports because it needs to run in non-strict mode.
+
+function assert(actual, expected, message) {
+    if (arguments.length == 1)
+        expected = true;
+
+    if (actual === expected)
+        return;
+
+    if (typeof actual == 'number' && isNaN(actual)
+    &&  typeof expected == 'number' && isNaN(expected))
+        return;
+
+    if (actual !== null && expected !== null
+    &&  typeof actual == 'object' && typeof expected == 'object'
+    &&  actual.toString() === expected.toString())
+        return;
+
+    var msg = message ? " (" + message + ")" : "";
+    throw Error("assertion failed: got |" + actual + "|" +
+                ", expected |" + expected + "|" + msg);
+}
+
+function assert_throws(expected_error, func, message)
+{
+    var err = false;
+    var msg = message ? " (" + message + ")" : "";
+    try {
+        switch (typeof func) {
+        case 'string':
+            eval(func);
+            break;
+        case 'function':
+            func();
+            break;
+        }
+    } catch(e) {
+        err = true;
+        if (!(e instanceof expected_error)) {
+            throw Error(`expected ${expected_error.name}, got ${e.name}${msg}`);
+        }
+    }
+    if (!err) {
+        throw Error(`expected ${expected_error.name}${msg}`);
+    }
+}
+
+/*----------------*/
+
+function test_op1()
+{
+    var r, a;
+    r = 1 + 2;
+    assert(r, 3, "1 + 2 === 3");
+
+    r = 1 - 2;
+    assert(r, -1, "1 - 2 === -1");
+
+    r = -1;
+    assert(r, -1, "-1 === -1");
+
+    r = +2;
+    assert(r, 2, "+2 === 2");
+
+    r = 2 * 3;
+    assert(r, 6, "2 * 3 === 6");
+
+    r = 4 / 2;
+    assert(r, 2, "4 / 2 === 2");
+
+    r = 4 % 3;
+    assert(r, 1, "4 % 3 === 3");
+
+    r = 4 << 2;
+    assert(r, 16, "4 << 2 === 16");
+
+    r = 1 << 0;
+    assert(r, 1, "1 << 0 === 1");
+
+    r = 1 << 31;
+    assert(r, -2147483648, "1 << 31 === -2147483648");
+
+    r = 1 << 32;
+    assert(r, 1, "1 << 32 === 1");
+
+    r = (1 << 31) < 0;
+    assert(r, true, "(1 << 31) < 0 === true");
+
+    r = -4 >> 1;
+    assert(r, -2, "-4 >> 1 === -2");
+
+    r = -4 >>> 1;
+    assert(r, 0x7ffffffe, "-4 >>> 1 === 0x7ffffffe");
+
+    r = 1 & 1;
+    assert(r, 1, "1 & 1 === 1");
+
+    r = 0 | 1;
+    assert(r, 1, "0 | 1 === 1");
+
+    r = 1 ^ 1;
+    assert(r, 0, "1 ^ 1 === 0");
+
+    r = ~1;
+    assert(r, -2, "~1 === -2");
+
+    r = !1;
+    assert(r, false, "!1 === false");
+
+    assert((1 < 2), true, "(1 < 2) === true");
+
+    assert((2 > 1), true, "(2 > 1) === true");
+
+    assert(('b' > 'a'), true, "('b' > 'a') === true");
+
+    assert(2 ** 8, 256, "2 ** 8 === 256");
+}
+
+function test_cvt()
+{
+    assert((NaN | 0), 0);
+    assert((Infinity | 0), 0);
+    assert(((-Infinity) | 0), 0);
+    assert(("12345" | 0), 12345);
+    assert(("0x12345" | 0), 0x12345);
+    assert(((4294967296 * 3 - 4) | 0), -4);
+
+    assert(("12345" >>> 0), 12345);
+    assert(("0x12345" >>> 0), 0x12345);
+    assert((NaN >>> 0), 0);
+    assert((Infinity >>> 0), 0);
+    assert(((-Infinity) >>> 0), 0);
+    assert(((4294967296 * 3 - 4) >>> 0), (4294967296 - 4));
+    assert((19686109595169230000).toString(), "19686109595169230000");
+}
+
+function test_eq()
+{
+    assert(null == undefined);
+    assert(undefined == null);
+    assert(true == 1);
+    assert(0 == false);
+    assert("" == 0);
+    assert("123" == 123);
+    assert("122" != 123);
+    assert((new Number(1)) == 1);
+    assert(2 == (new Number(2)));
+    assert((new String("abc")) == "abc");
+    assert({} != "abc");
+}
+
+function test_inc_dec()
+{
+    var a, r;
+
+    a = 1;
+    r = a++;
+    assert(r === 1 && a === 2, true, "++");
+
+    a = 1;
+    r = ++a;
+    assert(r === 2 && a === 2, true, "++");
+
+    a = 1;
+    r = a--;
+    assert(r === 1 && a === 0, true, "--");
+
+    a = 1;
+    r = --a;
+    assert(r === 0 && a === 0, true, "--");
+
+    a = {x:true};
+    a.x++;
+    assert(a.x, 2, "++");
+
+    a = {x:true};
+    a.x--;
+    assert(a.x, 0, "--");
+
+    a = [true];
+    a[0]++;
+    assert(a[0], 2, "++");
+
+    a = {x:true};
+    r = a.x++;
+    assert(r === 1 && a.x === 2, true, "++");
+
+    a = {x:true};
+    r = a.x--;
+    assert(r === 1 && a.x === 0, true, "--");
+
+    a = [true];
+    r = a[0]++;
+    assert(r === 1 && a[0] === 2, true, "++");
+
+    a = [true];
+    r = a[0]--;
+    assert(r === 1 && a[0] === 0, true, "--");
+}
+
+function F(x)
+{
+    this.x = x;
+}
+
+function test_op2()
+{
+    var a, b;
+    a = new Object;
+    a.x = 1;
+    assert(a.x, 1, "new");
+    b = new F(2);
+    assert(b.x, 2, "new");
+
+    a = {x : 2};
+    assert(("x" in a), true, "in");
+    assert(("y" in a), false, "in");
+
+    a = {};
+    assert((a instanceof Object), true, "instanceof");
+    assert((a instanceof String), false, "instanceof");
+
+    assert((typeof 1), "number", "typeof");
+    assert((typeof Object), "function", "typeof");
+    assert((typeof null), "object", "typeof");
+    assert((typeof unknown_var), "undefined", "typeof");
+
+    a = {x: 1, if: 2, async: 3};
+    assert(a.if === 2);
+    assert(a.async === 3);
+}
+
+function test_delete()
+{
+    var a, err;
+
+    a = {x: 1, y: 1};
+    assert((delete a.x), true, "delete");
+    assert(("x" in a), false, "delete");
+
+    /* the following are not tested by test262 */
+    assert(delete "abc"[100], true);
+
+    err = false;
+    try {
+        delete null.a;
+    } catch(e) {
+        err = (e instanceof TypeError);
+    }
+    assert(err, true, "delete");
+
+    err = false;
+    try {
+        a = { f() { delete super.a; } };
+        a.f();
+    } catch(e) {
+        err = (e instanceof ReferenceError);
+    }
+    assert(err, true, "delete");
+}
+
+function test_constructor()
+{
+    function *G() {}
+    let ex
+    try { new G() } catch (ex_) { ex = ex_ }
+    assert(ex instanceof TypeError)
+    assert(ex.message, "G is not a constructor")
+}
+
+function test_prototype()
+{
+    var f = function f() { };
+    assert(f.prototype.constructor, f, "prototype");
+
+    var g = function g() { };
+    /* QuickJS bug */
+    Object.defineProperty(g, "prototype", { writable: false });
+    assert(g.prototype.constructor, g, "prototype");
+}
+
+function test_arguments()
+{
+    function f2() {
+        assert(arguments.length, 2, "arguments");
+        assert(arguments[0], 1, "arguments");
+        assert(arguments[1], 3, "arguments");
+    }
+    f2(1, 3);
+}
+
+function test_class()
+{
+    var o;
+    class C {
+        constructor() {
+            this.x = 10;
+        }
+        f() {
+            return 1;
+        }
+        static F() {
+            return -1;
+        }
+        get y() {
+            return 12;
+        }
+    };
+    class D extends C {
+        constructor() {
+            super();
+            this.z = 20;
+        }
+        g() {
+            return 2;
+        }
+        static G() {
+            return -2;
+        }
+        h() {
+            return super.f();
+        }
+        static H() {
+            return super["F"]();
+        }
+    }
+
+    assert(C.F(), -1);
+    assert(Object.getOwnPropertyDescriptor(C.prototype, "y").get.name === "get y");
+
+    o = new C();
+    assert(o.f(), 1);
+    assert(o.x, 10);
+
+    assert(D.F(), -1);
+    assert(D.G(), -2);
+    assert(D.H(), -1);
+
+    o = new D();
+    assert(o.f(), 1);
+    assert(o.g(), 2);
+    assert(o.x, 10);
+    assert(o.z, 20);
+    assert(o.h(), 1);
+
+    /* test class name scope */
+    var E1 = class E { static F() { return E; } };
+    assert(E1, E1.F());
+
+    class S {
+        static x = 42;
+        static y = S.x;
+        static z = this.x;
+    }
+    assert(S.x, 42);
+    assert(S.y, 42);
+    assert(S.z, 42);
+    
+    class P {
+        get;
+        set;
+        async;
+        get = () => "123";
+        set = () => "456";
+        async = () => "789";
+        static() { return 42; }
+    }
+    assert(new P().get(), "123");
+    assert(new P().set(), "456");
+    assert(new P().async(), "789");
+    assert(new P().static(), 42);
+};
+
+function test_template()
+{
+    var a, b;
+    b = 123;
+    a = `abc${b}d`;
+    assert(a, "abc123d");
+
+    a = String.raw `abc${b}d`;
+    assert(a, "abc123d");
+
+    a = "aaa";
+    b = "bbb";
+    assert(`aaa${a, b}ccc`, "aaabbbccc");
+}
+
+function test_template_skip()
+{
+    var a = "Bar";
+    var { b = `${a + `a${a}` }baz` } = {};
+    assert(b, "BaraBarbaz");
+}
+
+function test_object_literal()
+{
+    var x = 0, get = 1, set = 2; async = 3;
+    a = { get: 2, set: 3, async: 4, get a(){ return this.get} };
+    assert(JSON.stringify(a), '{"get":2,"set":3,"async":4,"a":2}');
+    assert(a.a, 2);
+
+    a = { x, get, set, async };
+    assert(JSON.stringify(a), '{"x":0,"get":1,"set":2,"async":3}');
+}
+
+function test_regexp_skip()
+{
+    var a, b;
+    [a, b = /abc\(/] = [1];
+    assert(a, 1);
+
+    [a, b =/abc\(/] = [2];
+    assert(a, 2);
+}
+
+function test_labels()
+{
+    do x: { break x; } while(0);
+    if (1)
+        x: { break x; }
+    else
+        x: { break x; }
+    with ({}) x: { break x; };
+    while (0) x: { break x; };
+}
+
+function test_destructuring()
+{
+    function * g () { return 0; };
+    var [x] = g();
+    assert(x, void 0);
+}
+
+function test_spread()
+{
+    var x;
+    x = [1, 2, ...[3, 4]];
+    assert(x.toString(), "1,2,3,4");
+
+    x = [ ...[ , ] ];
+    assert(Object.getOwnPropertyNames(x).toString(), "0,length");
+}
+
+function test_function_length()
+{
+    assert( ((a, b = 1, c) => {}).length, 1);
+    assert( (([a,b]) => {}).length, 1);
+    assert( (({a,b}) => {}).length, 1);
+    assert( ((c, [a,b] = 1, d) => {}).length, 1);
+}
+
+function test_argument_scope()
+{
+    var f;
+    var c = "global";
+
+    f = function(a = eval("var arguments")) {};
+    // for some reason v8 does not throw an exception here
+    if (typeof require === 'undefined')
+        assert_throws(SyntaxError, f);
+
+    f = function(a = eval("1"), b = arguments[0]) { return b; };
+    assert(f(12), 12);
+
+    f = function(a, b = arguments[0]) { return b; };
+    assert(f(12), 12);
+
+    f = function(a, b = () => arguments) { return b; };
+    assert(f(12)()[0], 12);
+
+    f = function(a = eval("1"), b = () => arguments) { return b; };
+    assert(f(12)()[0], 12);
+
+    (function() {
+        "use strict";
+        f = function(a = this) { return a; };
+        assert(f.call(123), 123);
+
+        f = function f(a = f) { return a; };
+        assert(f(), f);
+
+        f = function f(a = eval("f")) { return a; };
+        assert(f(), f);
+    })();
+
+    f = (a = eval("var c = 1"), probe = () => c) => {
+        var c = 2;
+        assert(c, 2);
+        assert(probe(), 1);
+    }
+    f();
+
+    f = (a = eval("var arguments = 1"), probe = () => arguments) => {
+        var arguments = 2;
+        assert(arguments, 2);
+        assert(probe(), 1);
+    }
+    f();
+
+    f = function f(a = eval("var c = 1"), b = c, probe = () => c) {
+        assert(b, 1);
+        assert(c, 1);
+        assert(probe(), 1)
+    }
+    f();
+
+    assert(c, "global");
+    f = function f(a, b = c, probe = () => c) {
+        eval("var c = 1");
+        assert(c, 1);
+        assert(b, "global");
+        assert(probe(), "global")
+    }
+    f();
+    assert(c, "global");
+
+    f = function f(a = eval("var c = 1"), probe = (d = eval("c")) => d) {
+        assert(probe(), 1)
+    }
+    f();
+}
+
+function test_function_expr_name()
+{
+    var f;
+
+    /* non strict mode test : assignment to the function name silently
+       fails */
+
+    f = function myfunc() {
+        myfunc = 1;
+        return myfunc;
+    };
+    assert(f(), f);
+
+    f = function myfunc() {
+        myfunc = 1;
+        (() => {
+            myfunc = 1;
+        })();
+        return myfunc;
+    };
+    assert(f(), f);
+
+    f = function myfunc() {
+        eval("myfunc = 1");
+        return myfunc;
+    };
+    assert(f(), f);
+
+    /* strict mode test : assignment to the function name raises a
+       TypeError exception */
+
+    f = function myfunc() {
+        "use strict";
+        myfunc = 1;
+    };
+    assert_throws(TypeError, f);
+
+    f = function myfunc() {
+        "use strict";
+        (() => {
+            myfunc = 1;
+        })();
+    };
+    assert_throws(TypeError, f);
+
+    f = function myfunc() {
+        "use strict";
+        eval("myfunc = 1");
+    };
+    assert_throws(TypeError, f);
+}
+
+function test_expr(expr, err) {
+    if (err)
+        assert_throws(err, expr, `for ${expr}`);
+    else
+        assert(1, eval(expr), `for ${expr}`);
+}
+
+function test_name(name, err)
+{
+    test_expr(`(function() { return typeof ${name} ? 1 : 1; })()`);
+    test_expr(`(function() { var ${name}; ${name} = 1; return ${name}; })()`);
+    test_expr(`(function() { let ${name}; ${name} = 1; return ${name}; })()`, name == 'let' ? SyntaxError : undefined);
+    test_expr(`(function() { const ${name} = 1; return ${name}; })()`, name == 'let' ? SyntaxError : undefined);
+    test_expr(`(function(${name}) { ${name} = 1; return ${name}; })()`);
+    test_expr(`(function({${name}}) { ${name} = 1; return ${name}; })({})`);
+    test_expr(`(function ${name}() { return ${name} ? 1 : 0; })()`);
+    test_expr(`"use strict"; (function() { return typeof ${name} ? 1 : 1; })()`, err);
+    test_expr(`"use strict"; (function() { if (0) ${name} = 1; return 1; })()`, err);
+    test_expr(`"use strict"; (function() { var x; if (0) x = ${name}; return 1; })()`, err);
+    test_expr(`"use strict"; (function() { var ${name}; return 1; })()`, err);
+    test_expr(`"use strict"; (function() { let ${name}; return 1; })()`, err);
+    test_expr(`"use strict"; (function() { const ${name} = 1; return 1; })()`, err);
+    test_expr(`"use strict"; (function() { var ${name}; ${name} = 1; return 1; })()`, err);
+    test_expr(`"use strict"; (function() { var ${name}; ${name} = 1; return ${name}; })()`, err);
+    test_expr(`"use strict"; (function(${name}) { return 1; })()`, err);
+    test_expr(`"use strict"; (function({${name}}) { return 1; })({})`, err);
+    test_expr(`"use strict"; (function ${name}() { return 1; })()`, err);
+    test_expr(`(function() { "use strict"; return typeof ${name} ? 1 : 1; })()`, err);
+    test_expr(`(function() { "use strict"; if (0) ${name} = 1; return 1; })()`, err);
+    test_expr(`(function() { "use strict"; var x; if (0) x = ${name}; return 1; })()`, err);
+    test_expr(`(function() { "use strict"; var ${name}; return 1; })()`, err);
+    test_expr(`(function() { "use strict"; let ${name}; return 1; })()`, err);
+    test_expr(`(function() { "use strict"; const ${name} = 1; return 1; })()`, err);
+    test_expr(`(function() { "use strict"; var ${name}; ${name} = 1; return 1; })()`, err);
+    test_expr(`(function() { "use strict"; var ${name}; ${name} = 1; return ${name}; })()`, err);
+    test_expr(`(function(${name}) { "use strict"; return 1; })()`, err);
+    test_expr(`(function({${name}}) { "use strict"; return 1; })({})`, SyntaxError);
+    test_expr(`(function ${name}() { "use strict"; return 1; })()`, err);
+}
+
+function test_reserved_names()
+{
+    test_name('await');
+    test_name('yield', SyntaxError);
+    test_name('implements', SyntaxError);
+    test_name('interface', SyntaxError);
+    test_name('let', SyntaxError);
+    test_name('package', SyntaxError);
+    test_name('private', SyntaxError);
+    test_name('protected', SyntaxError);
+    test_name('public', SyntaxError);
+    test_name('static', SyntaxError);
+}
+
+function test_number_literals()
+{
+    assert(0.1.a, undefined);
+    assert(0x1.a, undefined);
+    assert(0b1.a, undefined);
+    assert(01.a, undefined);
+    assert(0o1.a, undefined);
+    test_expr('0.a', SyntaxError);
+    assert(parseInt("0_1"), 0);
+    assert(parseInt("1_0"), 1);
+    assert(parseInt("0_1", 8), 0);
+    assert(parseInt("1_0", 8), 1);
+    assert(parseFloat("0_1"), 0);
+    assert(parseFloat("1_0"), 1);
+    assert(1_0, 10);
+    assert(parseInt("Infinity"), NaN);
+    assert(parseFloat("Infinity"), Infinity);
+    assert(parseFloat("Infinity1"), Infinity);
+    assert(parseFloat("Infinity_"), Infinity);
+    assert(parseFloat("Infinity."), Infinity);
+    test_expr('0_0', SyntaxError);
+    test_expr('00_0', SyntaxError);
+    test_expr('01_0', SyntaxError);
+    test_expr('08_0', SyntaxError);
+    test_expr('09_0', SyntaxError);
+}
+
+function test_syntax()
+{
+    assert_throws(SyntaxError, "do");
+    assert_throws(SyntaxError, "do;");
+    assert_throws(SyntaxError, "do{}");
+    assert_throws(SyntaxError, "if");
+    assert_throws(SyntaxError, "if\n");
+    assert_throws(SyntaxError, "if 1");
+    assert_throws(SyntaxError, "if \0");
+    assert_throws(SyntaxError, "if ;");
+    assert_throws(SyntaxError, "if 'abc'");
+    assert_throws(SyntaxError, "if `abc`");
+    assert_throws(SyntaxError, "if /abc/");
+    assert_throws(SyntaxError, "if abc");
+    assert_throws(SyntaxError, "if abc\u0064");
+    assert_throws(SyntaxError, "if abc\\u0064");
+    assert_throws(SyntaxError, "if \u0123");
+    assert_throws(SyntaxError, "if \\u0123");
+}
+
+/* optional chaining tests not present in test262 */
+function test_optional_chaining()
+{
+    var a, z;
+    z = null;
+    a = { b: { c: 2 } };
+    assert(delete z?.b.c, true);
+    assert(delete a?.b.c, true);
+    assert(JSON.stringify(a), '{"b":{}}', "optional chaining delete");
+
+    a = { b: { c: 2 } };
+    assert(delete z?.b["c"], true);
+    assert(delete a?.b["c"], true);
+    assert(JSON.stringify(a), '{"b":{}}');
+
+    a = {
+        b() { return this._b; },
+        _b: { c: 42 }
+    };
+
+    assert((a?.b)().c, 42);
+
+    assert((a?.["b"])().c, 42);
+}
+
+function test_parse_semicolon()
+{
+    /* 'yield' or 'await' may not be considered as a token if the
+       previous ';' is missing */
+    function *f()
+    {
+        function func() {
+        }
+        yield 1;
+        var h = x => x + 1
+        yield 2;
+    }
+    async function g()
+    {
+        function func() {
+        }
+        await 1;
+        var h = x => x + 1
+        await 2;
+    }
+}
+
+test_op1();
+test_cvt();
+test_eq();
+test_inc_dec();
+test_op2();
+test_delete();
+test_constructor();
+test_prototype();
+test_arguments();
+test_class();
+test_template();
+test_template_skip();
+test_object_literal();
+test_regexp_skip();
+test_labels();
+test_destructuring();
+test_spread();
+test_function_length();
+test_argument_scope();
+test_function_expr_name();
+test_reserved_names();
+test_number_literals();
+test_syntax();
+test_optional_chaining();
+test_parse_semicolon();
@@ -0,0 +1,367 @@
+// This test cannot use imports because it needs to run in non-strict mode.
+
+function assert(actual, expected, message) {
+    if (arguments.length == 1)
+        expected = true;
+
+    if (actual === expected)
+        return;
+
+    if (actual !== null && expected !== null
+    &&  typeof actual == 'object' && typeof expected == 'object'
+    &&  actual.toString() === expected.toString())
+        return;
+
+    throw Error("assertion failed: got |" + actual + "|" +
+                ", expected |" + expected + "|" +
+                (message ? " (" + message + ")" : ""));
+}
+
+/*----------------*/
+
+function test_while()
+{
+    var i, c;
+    i = 0;
+    c = 0;
+    while (i < 3) {
+        c++;
+        i++;
+    }
+    assert(c, 3);
+}
+
+function test_while_break()
+{
+    var i, c;
+    i = 0;
+    c = 0;
+    while (i < 3) {
+        c++;
+        if (i == 1)
+            break;
+        i++;
+    }
+    assert(c === 2 && i === 1);
+}
+
+function test_do_while()
+{
+    var i, c;
+    i = 0;
+    c = 0;
+    do {
+        c++;
+        i++;
+    } while (i < 3);
+    assert(c === 3 && i === 3);
+}
+
+function test_for()
+{
+    var i, c;
+    c = 0;
+    for(i = 0; i < 3; i++) {
+        c++;
+    }
+    assert(c === 3 && i === 3);
+
+    c = 0;
+    for(var j = 0; j < 3; j++) {
+        c++;
+    }
+    assert(c === 3 && j === 3);
+}
+
+function test_for_in()
+{
+    var i, tab, a, b;
+
+    tab = [];
+    for(i in {x:1, y: 2}) {
+        tab.push(i);
+    }
+    assert(tab.toString(), "x,y", "for_in");
+
+    /* prototype chain test */
+    a = {x:2, y: 2, "1": 3};
+    b = {"4" : 3 };
+    Object.setPrototypeOf(a, b);
+    tab = [];
+    for(i in a) {
+        tab.push(i);
+    }
+    assert(tab.toString(), "1,x,y,4", "for_in");
+
+    /* non enumerable properties hide enumerables ones in the
+       prototype chain */
+    a = {y: 2, "1": 3};
+    Object.defineProperty(a, "x", { value: 1 });
+    b = {"x" : 3 };
+    Object.setPrototypeOf(a, b);
+    tab = [];
+    for(i in a) {
+        tab.push(i);
+    }
+    assert(tab.toString(), "1,y", "for_in");
+
+    /* array optimization */
+    a = [];
+    for(i = 0; i < 10; i++)
+        a.push(i);
+    tab = [];
+    for(i in a) {
+        tab.push(i);
+    }
+    assert(tab.toString(), "0,1,2,3,4,5,6,7,8,9", "for_in");
+
+    /* iterate with a field */
+    a={x:0};
+    tab = [];
+    for(a.x in {x:1, y: 2}) {
+        tab.push(a.x);
+    }
+    assert(tab.toString(), "x,y", "for_in");
+
+    /* iterate with a variable field */
+    a=[0];
+    tab = [];
+    for(a[0] in {x:1, y: 2}) {
+        tab.push(a[0]);
+    }
+    assert(tab.toString(), "x,y", "for_in");
+
+    /* variable definition in the for in */
+    tab = [];
+    for(var j in {x:1, y: 2}) {
+        tab.push(j);
+    }
+    assert(tab.toString(), "x,y", "for_in");
+
+    /* variable assigment in the for in */
+    tab = [];
+    for(var k = 2 in {x:1, y: 2}) {
+        tab.push(k);
+    }
+    assert(tab.toString(), "x,y", "for_in");
+}
+
+function test_for_in2()
+{
+    var i;
+    tab = [];
+    for(i in {x:1, y: 2, z:3}) {
+        if (i === "y")
+            continue;
+        tab.push(i);
+    }
+    assert(tab.toString() == "x,z");
+
+    tab = [];
+    for(i in {x:1, y: 2, z:3}) {
+        if (i === "z")
+            break;
+        tab.push(i);
+    }
+    assert(tab.toString() == "x,y");
+}
+
+function test_for_break()
+{
+    var i, c;
+    c = 0;
+    L1: for(i = 0; i < 3; i++) {
+        c++;
+        if (i == 0)
+            continue;
+        while (1) {
+            break L1;
+        }
+    }
+    assert(c === 2 && i === 1);
+}
+
+function test_switch1()
+{
+    var i, a, s;
+    s = "";
+    for(i = 0; i < 3; i++) {
+        a = "?";
+        switch(i) {
+        case 0:
+            a = "a";
+            break;
+        case 1:
+            a = "b";
+            break;
+        default:
+            a = "c";
+            break;
+        }
+        s += a;
+    }
+    assert(s === "abc" && i === 3);
+}
+
+function test_switch2()
+{
+    var i, a, s;
+    s = "";
+    for(i = 0; i < 4; i++) {
+        a = "?";
+        switch(i) {
+        case 0:
+            a = "a";
+            break;
+        case 1:
+            a = "b";
+            break;
+        case 2:
+            continue;
+        default:
+            a = "" + i;
+            break;
+        }
+        s += a;
+    }
+    assert(s === "ab3" && i === 4);
+}
+
+function test_try_catch1()
+{
+    try {
+        throw "hello";
+    } catch (e) {
+        assert(e, "hello", "catch");
+        return;
+    }
+    assert(false, "catch");
+}
+
+function test_try_catch2()
+{
+    var a;
+    try {
+        a = 1;
+    } catch (e) {
+        a = 2;
+    }
+    assert(a, 1, "catch");
+}
+
+function test_try_catch3()
+{
+    var s;
+    s = "";
+    try {
+        s += "t";
+    } catch (e) {
+        s += "c";
+    } finally {
+        s += "f";
+    }
+    assert(s, "tf", "catch");
+}
+
+function test_try_catch4()
+{
+    var s;
+    s = "";
+    try {
+        s += "t";
+        throw "c";
+    } catch (e) {
+        s += e;
+    } finally {
+        s += "f";
+    }
+    assert(s, "tcf", "catch");
+}
+
+function test_try_catch5()
+{
+    var s;
+    s = "";
+    for(;;) {
+        try {
+            s += "t";
+            break;
+            s += "b";
+        } finally {
+            s += "f";
+        }
+    }
+    assert(s, "tf", "catch");
+}
+
+function test_try_catch6()
+{
+    function f() {
+        try {
+            s += 't';
+            return 1;
+        } finally {
+            s += "f";
+        }
+    }
+    var s = "";
+    assert(f() === 1);
+    assert(s, "tf", "catch6");
+}
+
+function test_try_catch7()
+{
+    var s;
+    s = "";
+
+    try {
+        try {
+            s += "t";
+            throw "a";
+        } finally {
+            s += "f";
+        }
+    } catch(e) {
+        s += e;
+    } finally {
+        s += "g";
+    }
+    assert(s, "tfag", "catch");
+}
+
+function test_try_catch8()
+{
+    var i, s;
+
+    s = "";
+    for(var i in {x:1, y:2}) {
+        try {
+            s += i;
+            throw "a";
+        } catch (e) {
+            s += e;
+        } finally {
+            s += "f";
+        }
+    }
+    assert(s === "xafyaf");
+}
+
+test_while();
+test_while_break();
+test_do_while();
+test_for();
+test_for_break();
+test_switch1();
+test_switch2();
+test_for_in();
+test_for_in2();
+
+test_try_catch1();
+test_try_catch2();
+test_try_catch3();
+test_try_catch4();
+test_try_catch5();
+test_try_catch6();
+test_try_catch7();
+test_try_catch8();
@@ -0,0 +1,39 @@
+import { assert, assertArrayEquals, assertThrows } from "./assert.js";
+
+function test_types() {
+  assertThrows(TypeError, () => queueMicrotask(), "no argument");
+  assertThrows(TypeError, () => queueMicrotask(undefined), "undefined");
+  assertThrows(TypeError, () => queueMicrotask(null), "null");
+  assertThrows(TypeError, () => queueMicrotask(0), "0");
+  assertThrows(TypeError, () => queueMicrotask({ handleEvent() { } }), "an event handler object");
+  assertThrows(TypeError, () => queueMicrotask("window.x = 5;"), "a string");
+}
+
+function test_async() {
+  let called = false;
+  queueMicrotask(() => {
+    called = true;
+  });
+  assert(!called);
+}
+
+function test_arguments() {
+  queueMicrotask(function () { // note: intentionally not an arrow function
+    assert(arguments.length === 0);
+  }, "x", "y");
+};
+
+function test_async_order() {
+  const happenings = [];
+  Promise.resolve().then(() => happenings.push("a"));
+  queueMicrotask(() => happenings.push("b"));
+  Promise.reject().catch(() => happenings.push("c"));
+  queueMicrotask(() => {
+    assertArrayEquals(happenings, ["a", "b", "c"]);
+  });
+}
+
+test_types();
+test_async();
+test_arguments();
+test_async_order();
@@ -0,0 +1,314 @@
+import * as std from "qjs:std";
+import * as os from "qjs:os";
+import { assert } from  "./assert.js";
+
+const isWin = os.platform === 'win32';
+const isCygwin = os.platform === 'cygwin';
+
+
+function test_printf()
+{
+    assert(std.sprintf("a=%d s=%s", 123, "abc"), "a=123 s=abc");
+    assert(std.sprintf("%010d", 123), "0000000123");
+    assert(std.sprintf("%x", -2), "fffffffe");
+    assert(std.sprintf("%lx", -2), "fffffffffffffffe");
+    assert(std.sprintf("%10.1f", 2.1), "       2.1");
+    assert(std.sprintf("%*.*f", 10, 2, -2.13), "     -2.13");
+    assert(std.sprintf("%#lx", 0x7fffffffffffffffn), "0x7fffffffffffffff");
+}
+
+function test_file1()
+{
+    var f, len, str, size, buf, ret, i, str1, ab;
+
+    f = std.tmpfile();
+    str = "hello world\n";
+    f.puts(str);
+
+    f.seek(0, std.SEEK_SET);
+    ab = f.readAsArrayBuffer();
+    assert([...new Uint8Array(ab)], str.split("").map(c => c.charCodeAt(0)));
+
+    f.seek(0, std.SEEK_SET);
+    str1 = f.readAsString();
+    assert(str1, str);
+
+    f.seek(0, std.SEEK_END);
+    size = f.tell();
+    assert(size, str.length);
+
+    f.seek(0, std.SEEK_SET);
+
+    buf = new Uint8Array(size);
+    ret = f.read(buf.buffer, 0, size);
+    assert(ret, size);
+    for(i = 0; i < size; i++)
+        assert(buf[i], str.charCodeAt(i));
+
+    f.close();
+}
+
+function test_file2()
+{
+    var f, str, i, size;
+    f = std.tmpfile();
+    str = "hello world\n";
+    size = str.length;
+    for(i = 0; i < size; i++)
+        f.putByte(str.charCodeAt(i));
+    f.seek(0, std.SEEK_SET);
+    for(i = 0; i < size; i++) {
+        assert(str.charCodeAt(i), f.getByte());
+    }
+    assert(f.getByte(), -1);
+    f.close();
+}
+
+function test_getline()
+{
+    var f, line, line_count, lines, i;
+
+    lines = ["hello world", "line 1", "line 2" ];
+    f = std.tmpfile();
+    for(i = 0; i < lines.length; i++) {
+        f.puts(lines[i], "\n");
+    }
+
+    f.seek(0, std.SEEK_SET);
+    assert(!f.eof());
+    line_count = 0;
+    for(;;) {
+        line = f.getline();
+        if (line === null)
+            break;
+        assert(line, lines[line_count]);
+        line_count++;
+    }
+    assert(f.eof());
+    assert(line_count, lines.length);
+
+    f.close();
+}
+
+function test_popen()
+{
+    var str, f, fname = "tmp_file.txt";
+    var ta, content = "hello world";
+    var cmd = isWin ? "type" : "cat";
+
+    ta = new Uint8Array([...content].map(c => c.charCodeAt(0)));
+    std.writeFile(fname, ta);
+    assert(std.loadFile(fname), content);
+    std.writeFile(fname, ta.buffer);
+    assert(std.loadFile(fname), content);
+    std.writeFile(fname, content);
+    assert(std.loadFile(fname), content);
+
+    // popen pipe is unidirectional so mode should
+    // be either read or write but not both
+    let caught = false;
+    try {
+        std.popen(cmd, "rw");
+    } catch (e) {
+        assert(/invalid file mode/.test(e.message));
+        caught = true;
+    }
+    assert(caught);
+
+    /* execute shell command */
+    f = std.popen(cmd + " " + fname, "r");
+    str = f.readAsString();
+    f.close();
+
+    assert(str, content);
+
+    os.remove(fname);
+}
+
+function test_os()
+{
+    var fd, fpath, fname, fdir, buf, buf2, i, files, err, fdate, st, link_path;
+
+    // XXX(bnoordhuis) disabled because stdio is not a tty on CI
+    //assert(os.isatty(0));
+
+    fdir = "test_tmp_dir";
+    fname = "tmp_file.txt";
+    fpath = fdir + "/" + fname;
+    link_path = fdir + "/test_link";
+
+    os.remove(link_path);
+    os.remove(fpath);
+    os.remove(fdir);
+
+    err = os.mkdir(fdir, 0o755);
+    assert(err, 0);
+
+    fd = os.open(fpath, os.O_RDWR | os.O_CREAT | os.O_TRUNC);
+    assert(fd >= 0);
+
+    buf = new Uint8Array(10);
+    for(i = 0; i < buf.length; i++)
+        buf[i] = i;
+    assert(os.write(fd, buf.buffer, 0, buf.length), buf.length);
+
+    assert(os.seek(fd, 0, std.SEEK_SET), 0);
+    buf2 = new Uint8Array(buf.length);
+    assert(os.read(fd, buf2.buffer, 0, buf2.length), buf2.length);
+
+    for(i = 0; i < buf.length; i++)
+        assert(buf[i] == buf2[i]);
+
+    if (typeof BigInt !== "undefined") {
+        assert(os.seek(fd, BigInt(6), std.SEEK_SET), BigInt(6));
+        assert(os.read(fd, buf2.buffer, 0, 1), 1);
+        assert(buf[6] == buf2[0]);
+    }
+
+    assert(os.close(fd), 0);
+
+    [files, err] = os.readdir(fdir);
+    assert(err, 0);
+    assert(files.length >= 3);
+    assert(files.includes(fname));
+    assert(files.includes("."));
+    assert(files.includes(".."));
+
+    fdate = 10000;
+
+    err = os.utimes(fpath, fdate, fdate);
+    assert(err, 0);
+
+    [st, err] = os.stat(fpath);
+    assert(err, 0);
+    assert(st.mode & os.S_IFMT, os.S_IFREG);
+    assert(st.mtime, fdate);
+
+    if (!isWin) {
+        err = os.symlink(fname, link_path);
+        assert(err, 0);
+
+        [st, err] = os.lstat(link_path);
+        assert(err, 0);
+        assert(st.mode & os.S_IFMT, os.S_IFLNK);
+
+        [buf, err] = os.readlink(link_path);
+        assert(err, 0);
+        assert(buf, fname);
+
+        assert(os.remove(link_path) === 0);
+    }
+
+    [buf, err] = os.getcwd();
+    assert(err, 0);
+
+    [buf2, err] = os.realpath(".");
+    assert(err, 0);
+
+    assert(buf, buf2);
+
+    assert(os.remove(fpath) === 0);
+
+    fd = os.open(fpath, os.O_RDONLY);
+    assert(fd < 0);
+
+    assert(os.remove(fdir) === 0);
+}
+
+function test_os_exec()
+{
+    var ret, fds, pid, f, status;
+
+    ret = os.exec(["true"]);
+    assert(ret, 0);
+
+    ret = os.exec(["/bin/sh", "-c", "exit 1"], { usePath: false });
+    assert(ret, 1);
+
+    fds = os.pipe();
+    pid = os.exec(["sh", "-c", "echo $FOO"], {
+        stdout: fds[1],
+        block: false,
+        env: { FOO: "hello" },
+    } );
+    assert(pid >= 0);
+    os.close(fds[1]); /* close the write end (as it is only in the child)  */
+    f = std.fdopen(fds[0], "r");
+    assert(f.getline(), "hello");
+    assert(f.getline(), null);
+    f.close();
+    [ret, status] = os.waitpid(pid, 0);
+    assert(ret, pid);
+    assert(status & 0x7f, 0); /* exited */
+    assert(status >> 8, 0); /* exit code */
+
+    pid = os.exec(["cat"], { block: false } );
+    assert(pid >= 0);
+    os.kill(pid, os.SIGTERM);
+    [ret, status] = os.waitpid(pid, 0);
+    assert(ret, pid);
+    // Flaky on cygwin for unclear reasons, see
+    // https://github.com/quickjs-ng/quickjs/issues/184
+    if (!isCygwin) {
+        assert(status & 0x7f, os.SIGTERM);
+    }
+}
+
+function test_interval()
+{
+    var t = os.setInterval(f, 1);
+    function f() {
+        if (++f.count === 3) os.clearInterval(t);
+    }
+    f.count = 0;
+}
+
+function test_timeout()
+{
+    var th, i;
+
+    /* just test that a timer can be inserted and removed */
+    th = [];
+    for(i = 0; i < 3; i++)
+        th[i] = os.setTimeout(function () { }, 1000);
+    for(i = 0; i < 3; i++)
+        os.clearTimeout(th[i]);
+}
+
+function test_timeout_order()
+{
+    var s = "";
+    os.setTimeout(a, 0);
+    os.setTimeout(b, 100);
+    os.setTimeout(d, 700);
+    function a() { s += "a"; os.setTimeout(c, 300); }
+    function b() { s += "b"; }
+    function c() { s += "c"; }
+    function d() { assert(s, "abc"); } // not "acb"
+}
+
+function test_stdio_close()
+{
+    for (const f of [std.in, std.out, std.err]) {
+        let caught = false;
+        try {
+            f.close();
+        } catch (e) {
+            assert(/cannot close stdio/.test(e.message));
+            caught = true;
+        }
+        assert(caught);
+    }
+}
+
+test_printf();
+test_file1();
+test_file2();
+test_getline();
+test_popen();
+test_os();
+!isWin && test_os_exec();
+test_interval();
+test_timeout();
+test_timeout_order();
+test_stdio_close();
@@ -0,0 +1,25 @@
+// Test ES2020 string export/import names
+import { assert } from "./assert.js";
+import * as mod from "./fixture_string_exports.js";
+
+// Test string import names
+import { "string-export-1" as str1 } from "./fixture_string_exports.js";
+import { "string-export-2" as str2 } from "./fixture_string_exports.js";
+import { "string-name" as strMixed } from "./fixture_string_exports.js";
+
+// Test regular imports still work
+import { regularExport, normalName } from "./fixture_string_exports.js";
+
+// Verify values
+assert(str1, "value-1");
+assert(str2, "value-2");
+assert(strMixed, "mixed-value");
+assert(regularExport, "regular");
+assert(normalName, "mixed-value");
+
+// Verify module namespace has string-named exports
+assert(mod["string-export-1"], "value-1");
+assert(mod["string-export-2"], "value-2");
+assert(mod["string-name"], "mixed-value");
+assert(mod.regularExport, "regular");
+assert(mod.normalName, "mixed-value");
@@ -0,0 +1,43 @@
+import * as os from "qjs:os";
+import { assert } from "./assert.js";
+
+var worker;
+
+function test_worker()
+{
+    var counter;
+
+    worker = new os.Worker("./test_worker_module.js");
+
+    counter = 0;
+    worker.onmessage = function (e) {
+        var ev = e.data;
+//        print("recv", JSON.stringify(ev));
+        switch(ev.type) {
+        case "num":
+            assert(ev.num, counter);
+            counter++;
+            if (counter == 10) {
+                /* test SharedArrayBuffer modification */
+                let sab = new SharedArrayBuffer(10);
+                let buf = new Uint8Array(sab);
+                worker.postMessage({ type: "sab", buf: buf });
+            }
+            break;
+        case "sab_done":
+            {
+                let buf = ev.buf;
+                /* check that the SharedArrayBuffer was modified */
+                assert(buf[2], 10);
+                worker.postMessage({ type: "abort" });
+            }
+            break;
+        case "done":
+            /* terminate */
+            worker.onmessage = null;
+            break;
+        }
+    };
+}
+
+test_worker();
@@ -0,0 +1,30 @@
+/* Worker code for test_worker.js */
+import * as os from "qjs:os";
+
+var parent = os.Worker.parent;
+
+function handle_msg(e) {
+    var ev = e.data;
+    //          print("child_recv", JSON.stringify(ev));
+    switch(ev.type) {
+    case "abort":
+        parent.postMessage({ type: "done" });
+        break;
+    case "sab":
+        /* modify the SharedArrayBuffer */
+        ev.buf[2] = 10;
+        parent.postMessage({ type: "sab_done", buf: ev.buf });
+        break;
+    }
+}
+
+function worker_main() {
+    var i;
+
+    parent.onmessage = handle_msg;
+    for(i = 0; i < 10; i++) {
+        parent.postMessage({ type: "num", num: i });
+    }
+}
+
+worker_main();