123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139
import {  preprocess,  compile as svelteCompile,} from "https://cdn.esm.sh/svelte/compiler";
import ts from "https://cdn.esm.sh/typescript";import { Plugin } from "https://cdn.esm.sh/rollup";import { exists } from "https://deno.land/std@0.91.0/fs/mod.ts";import * as path from "https://deno.land/std@0.91.0/path/mod.ts";import { minify } from "https://cdn.esm.sh/terser";
// cache in tmpconst TS_CODE_PATH = "/tmp/_tscode.js";let tsCode: string | null = await Deno.readTextFile(TS_CODE_PATH).catch(  (_e) => null);
export const loadTs = () =>  ({    name: "ts-in-rollup",    resolveId(id: string) {      if (id === "typescript") {        return id;      }    },    async load(id: string) {      if (id === "typescript") {        if (tsCode != null) return tsCode;        const code = await fetch(          "https://cdn.jsdelivr.net/npm/typescript@4.2.3/lib/typescript.js"        ).then((res) => res.text());        const rewrote = code          .replace(/require\("perf_hooks"\)/, "{}")          .replace(/require\("inspector"\)/, "{}");        tsCode =          `globalThis.window = self;\n` + rewrote + `export default ts;\n`;        await Deno.writeTextFile(TS_CODE_PATH, tsCode);        return tsCode;      }    },  } as Plugin);
export const svelte = () =>  ({    name: "svelte",    async transform(code: string, id: string) {      if (id.endsWith(".svelte")) {        const { code: preprocessed } = await preprocess(          code,          [tsPreprocess()],          {            filename: "$.tsx",          }        );        const compiled = svelteCompile(preprocessed, {          css: false,        });        return compiled.js.code;      }      return;    },  } as Plugin);
const log = (...args: any) => console.log("[deno-loader]", ...args);
export const tsPreprocess = () => {  const script: any = async ({ content, filename }: any) => {    const out = ts.transpile(content, {      fileName: filename ?? "/$$.tsx",      target: ts.ScriptTarget.ES2019,    });    return { code: out };  };  return {    script,  };};
export const transform = () => {  return {    name: "ts-transform",    transform(code: string, id: string) {      if (id.endsWith(".ts") || id.endsWith(".tsx")) {        const out = ts.transpile(code, {          target: ts.ScriptTarget.ES2019,        });        return out;      }      return;    },  } as Plugin;};
export const compress = () => {  return {    name: "minify",    async transform(code: string, id: string) {      const out = await minify(code, {        module: true,      });      return out.code;    },  } as Plugin;};
export const denoLoader = () =>  ({    name: "deno-loader",    async resolveId(id: string, importer: string | undefined) {      const realpath = importer ? path.join(path.dirname(importer), id) : id;      // console.log("[deno-loader:resolve]", realpath);      // console.log("deno-loader:resolveId", id, importer);      if (await exists(realpath)) {        // console.log("deno-loader:resolveId]", realpath);        return realpath;      }      return;    },    async load(id: string) {      if (await exists(id)) {        const content = await Deno.readTextFile(id);        // console.log("deno-loader:load", id, content.slice(0, 10), "...");        return content;      }    },    transform(code: string, id: string) {      if (id.endsWith(".ts") || id.endsWith(".tsx")) {        // console.log("deno-loader:transform", id);        const out = ts.transpile(code, {          filename: "$.tsx",          target: ts.ScriptTarget.ES2019,          jsx: ts.JsxEmit.React,        });        return out;      }      return;    },  } as Plugin);