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lua.ts
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lua.ts
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import assert from 'node:assert';
import { LuaJS, LuaFunction, LuaTable } from '@doridian/luajs';
async function test(name: string, fn: () => Promise<void> | void) {
try {
await fn();
console.log(`✓ ${name}`);
} catch (err) {
console.error(`✗ ${name}`);
console.error(err);
}
}
function convertBack(ret: unknown[]): [string, unknown] {
return [ret[0] as string, (ret[1] as LuaTable).toObject(true, true)];
}
await test('Can run basic Lua code', async () => {
const L = await LuaJS.newState();
const ret = await L.run('return 1 + 2, "hello"');
assert.deepEqual(ret, [3, 'hello']);
});
await test('Can pass JS types to Lua correctly', async () => {
const L = await LuaJS.newState();
const ret = await L.run('return function(a) return type(a), a end');
const retConvert = await L.run('return function(a) a = a:toTable(true, 10); return type(a), a end');
const func = (ret[0] as LuaFunction).getClosure();
const funcConvert = (retConvert[0] as LuaFunction).getClosure();
assert.deepEqual(await func('hello world'), ['string', 'hello world']);
assert.deepEqual(await func(13), ['number', 13]);
assert.deepEqual(await func([1, 2, 3]), ['userdata', [1, 2, 3]]);
assert.deepEqual(convertBack(await funcConvert([1, 2, true, undefined, null, , 3])), ['table', [1, 2, true, , , , 3]]);
assert.deepEqual(convertBack(await funcConvert({ a: 1, b: '2', c: true, d: undefined, e: null })), ['table', { a: 1, b: '2', c: true }]);
assert.deepEqual(convertBack(await funcConvert({ a: 1, b: [4, { x: 5, y: [6, 9, 42] }, 6], c: true })), [
'table',
{ a: 1, b: [4, { x: 5, y: [6, 9, 42] }, 6], c: true }
]);
});
await test('allows awaiting JS promises', async () => {
const L = await LuaJS.newState();
await L.run('return js.await');
});

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