57 lines
1.4 KiB
JavaScript
57 lines
1.4 KiB
JavaScript
/* global WebAssembly, crypto */
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const {Environment, napi} = require('napi-wasm');
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let env;
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module.exports.init = async function init(input) {
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if (env) return;
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input = input ?? new URL('parcel_node_bindings.wasm', import.meta.url);
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const {instance} = await WebAssembly.instantiateStreaming(fetch(input), {
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env: {
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...napi,
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__getrandom_custom: (ptr, len) => {
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let buf = env.memory.subarray(ptr, ptr + len);
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crypto.getRandomValues(buf);
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},
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log: (ptr, len) => {
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// eslint-disable-next-line no-console
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console.log(env.getString(ptr, len));
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},
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},
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});
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// input =
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// input ?? require('path').join(__dirname, 'parcel_node_bindings.wasm');
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// const {instance} = await WebAssembly.instantiate(
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// require('fs').readFileSync(input),
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// {
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// env: napi,
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// },
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// );
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for (let key in instance.exports) {
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if (key.startsWith('__napi_register__')) {
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instance.exports[key]();
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}
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}
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env = new Environment(instance);
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for (let key in env.exports) {
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if (key !== 'transform') {
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module.exports[key] = env.exports[key];
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}
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}
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module.exports.transform = function (config) {
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let result = env.exports.transform(config);
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return {
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...result,
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// Hydrate Uint8Array into Buffer
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code: Buffer.from(result.code),
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};
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};
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env.exports.initPanicHook();
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};
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