cosmos-explorer/strict-migration-tools/autoAdd.js

// @ts-check
const path = require("path");
const fs = require("fs");
const child_process = require("child_process");
const config = require("./src/config");
const { forStrictNullCheckEligibleFiles } = require("./src/getStrictNullCheckEligibleFiles");

const vscodeRoot = path.join(process.cwd());
const srcRoot = path.join(vscodeRoot, "src");

const buildCompletePattern = /Found (\d+) errors?\. Watching for file changes\./gi;

forStrictNullCheckEligibleFiles(vscodeRoot, () => {}).then(async files => {
  const tsconfigPath = path.join(srcRoot, config.targetTsconfig);

  const child = child_process.spawn("tsc", ["-p", tsconfigPath, "--watch"]);
  for (const file of files) {
    await tryAutoAddStrictNulls(child, tsconfigPath, file);
  }
  child.kill();
});

function tryAutoAddStrictNulls(child, tsconfigPath, file) {
  return new Promise(resolve => {
    const relativeFilePath = path.relative(srcRoot, file);
    console.log(`Trying to auto add ./src/${relativeFilePath}`);

    const originalConifg = JSON.parse(fs.readFileSync(tsconfigPath).toString());
    originalConifg.files = Array.from(new Set(originalConifg.files.sort()));

    // Config on accept
    const newConfig = Object.assign({}, originalConifg);
    newConfig.files = Array.from(new Set(originalConifg.files.concat("./src/" + relativeFilePath).sort()));

    fs.writeFileSync(tsconfigPath, JSON.stringify(newConfig, null, "\t"));

    const listener = data => {
      const textOut = data.toString();
      const match = buildCompletePattern.exec(textOut);
      if (match) {
        const errorCount = +match[1];
        if (errorCount === 0) {
          console.log(`👍`);
          fs.writeFileSync(tsconfigPath, JSON.stringify(newConfig, null, "\t"));
        } else {
          console.log(`💥 - ${errorCount}`);
          fs.writeFileSync(tsconfigPath, JSON.stringify(originalConifg, null, "\t"));
        }
        resolve();
        child.stdout.removeListener("data", listener);
      }
    };
    child.stdout.on("data", listener);
  });
}