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Add and update contexts #109

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Add and update contexts #109

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d2d2eed
Add globals available in all supported node versions
tshemsedinov Jul 31, 2023
bcdeeaa
Add metavm.NODE_CONTEXT
tshemsedinov Jul 31, 2023
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44 changes: 26 additions & 18 deletions metavm.js
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Original file line number Diff line number Diff line change
Expand Up @@ -21,25 +21,32 @@ const MODULE_TYPE = {
COMMONJS: 2,
};

const EMPTY_CONTEXT = vm.createContext(Object.freeze({}), CONTEXT_OPTIONS);
const DEFAULT = {
AbortController,
Event,
EventTarget,
MessageChannel,
MessageEvent,
MessagePort,
Buffer,
URL,
URLSearchParams,
TextDecoder,
TextEncoder,
queueMicrotask,
setTimeout,
setImmediate,
setInterval,
clearTimeout,
clearImmediate,
clearInterval,
};

const COMMON_CONTEXT = vm.createContext(
Object.freeze({
Buffer,
URL,
URLSearchParams,
TextDecoder,
TextEncoder,
console,
queueMicrotask,
setTimeout,
setImmediate,
setInterval,
clearTimeout,
clearImmediate,
clearInterval,
}),
);
const NODE = { global, console, process };

const EMPTY_CONTEXT = vm.createContext(Object.freeze({}), CONTEXT_OPTIONS);
const COMMON_CONTEXT = vm.createContext(Object.freeze({ ...DEFAULT }));
const NODE_CONTEXT = vm.createContext(Object.freeze({ ...DEFAULT, ...NODE }));

class MetavmError extends Error {}

Expand Down Expand Up @@ -157,6 +164,7 @@ module.exports = {
createScript,
EMPTY_CONTEXT,
COMMON_CONTEXT,
NODE_CONTEXT,
MODULE_TYPE,
readScript,
};
30 changes: 29 additions & 1 deletion test/unit.js
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Original file line number Diff line number Diff line change
Expand Up @@ -218,8 +218,36 @@ metatests.test('Create default context', async (test) => {
metatests.test('Create common context', async (test) => {
const context = metavm.createContext(metavm.COMMON_CONTEXT);
test.strictSame(typeof context, 'object');
test.strictSame(context.console, console);
test.strictSame(context.global, undefined);
test.strictSame(context.console, undefined);
test.strictSame(context.process, undefined);
test.strictSame(context.AbortController, AbortController);
test.strictSame(context.Buffer, Buffer);
test.strictSame(context.Event, Event);
test.strictSame(context.EventTarget, EventTarget);
test.strictSame(context.MessageChannel, MessageChannel);
test.strictSame(context.MessageEvent, MessageEvent);
test.strictSame(context.MessagePort, MessagePort);
test.strictSame(context.URL, URL);
test.strictSame(context.URLSearchParams, URLSearchParams);
test.strictSame(context.TextDecoder, TextDecoder);
test.strictSame(context.TextEncoder, TextEncoder);
test.strictSame(context.queueMicrotask, queueMicrotask);
test.strictSame(context.setTimeout, setTimeout);
test.strictSame(context.setImmediate, setImmediate);
test.strictSame(context.setInterval, setInterval);
test.strictSame(context.clearTimeout, clearTimeout);
test.strictSame(context.clearImmediate, clearImmediate);
test.strictSame(context.clearInterval, clearInterval);
test.end();
});

metatests.test('Create nodejs context', async (test) => {
const context = metavm.createContext(metavm.NODE_CONTEXT);
test.strictSame(typeof context, 'object');
test.strictSame(context.global, global);
test.strictSame(context.console, console);
test.strictSame(context.process, process);
test.end();
});

Expand Down
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