63 lines
1.5 KiB
JavaScript
63 lines
1.5 KiB
JavaScript
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const [src, dest] = Deno.args;
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const wasm = await Deno.readFile(src);
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function encode(bytes) {
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let binary = "";
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for (let i = 0; i < bytes.length; i++) {
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binary += String.fromCharCode(bytes[i]);
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}
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return btoa(binary).replace(/\n/g, "");
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}
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await Deno.writeFile(
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dest,
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new TextEncoder().encode(
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`/// <reference types="./sqlite.d.ts" />
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/* This file is automatically generated. Do not edit directly. */
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import env from "./vfs.js";
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const wasm =
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"${encode(wasm)}";
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function decode(base64) {
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const bytesStr = atob(base64);
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const bytes = new Uint8Array(bytesStr.length);
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for (let i = 0, c = bytesStr.length; i < c; i++) {
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bytes[i] = bytesStr.charCodeAt(i);
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}
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return bytes;
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}
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const moduleOrInstance = {
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module: null,
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instances: [],
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};
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export async function compile() {
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moduleOrInstance.module = await WebAssembly.compile(decode(wasm));
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}
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export async function instantiateBrowser() {
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const placeholder = { exports: null };
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const instance = await WebAssembly.instantiate(moduleOrInstance.module, env(placeholder));
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placeholder.exports = instance.exports;
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instance.exports.seed_rng(Date.now());
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moduleOrInstance.instances.push(instance);
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}
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export function instantiate() {
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if (moduleOrInstance.instances.length) {
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return moduleOrInstance.instances.pop();
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} else {
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const placeholder = { exports: null };
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const instance = new WebAssembly.Instance(moduleOrInstance.module, env(placeholder));
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placeholder.exports = instance.exports;
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instance.exports.seed_rng(Date.now());
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return instance;
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}
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}`,
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),
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);
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