40 lines
907 B
TypeScript
40 lines
907 B
TypeScript
import { Either, left, right } from "fp-ts/lib/Either"
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import * as QuickJS from "quickjs-emscripten"
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export function marshalObjectToVM(
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vm: QuickJS.QuickJSVm,
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obj: object
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): Either<string, QuickJS.QuickJSHandle> {
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let jsonString
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try {
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jsonString = JSON.stringify(obj)
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} catch (e) {
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return left("Marshaling stringification failed")
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}
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const vmStringHandle = vm.newString(jsonString)
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const jsonHandle = vm.getProp(vm.global, "JSON")
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const parseFuncHandle = vm.getProp(jsonHandle, "parse")
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const parseResultHandle = vm.callFunction(
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parseFuncHandle,
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vm.undefined,
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vmStringHandle
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)
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if (parseResultHandle.error) {
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parseResultHandle.error.dispose()
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return left("Marshaling failed")
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}
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const resultHandle = vm.unwrapResult(parseResultHandle)
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vmStringHandle.dispose()
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parseFuncHandle.dispose()
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jsonHandle.dispose()
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return right(resultHandle)
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}
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