react/scripts/release/publish-commands/publish-to-npm.js

#!/usr/bin/env node

'use strict';

const {exec} = require('child-process-promise');
const clear = require('clear');
const {readJsonSync} = require('fs-extra');
const {join} = require('path');
const {confirm, execRead} = require('../utils');
const theme = require('../theme');

const run = async ({cwd, dry, packages, tag}, otp) => {
  clear();

  for (let i = 0; i < packages.length; i++) {
    const packageName = packages[i];
    const packagePath = join(cwd, 'build/node_modules', packageName);
    const {version} = readJsonSync(join(packagePath, 'package.json'));

    // Check if this package version has already been published.
    // If so we might be resuming from a previous run.
    // We could infer this by comparing the build-info.json,
    // But for now the easiest way is just to ask if this is expected.
    const info = await execRead(`npm view ${packageName}@${version}`);
    if (info) {
      console.log(
        theme`{package ${packageName}} {version ${version}} has already been published.`
      );
      await confirm('Is this expected?');
    } else {
      console.log(
        theme`{spinnerSuccess ✓} Publishing {package ${packageName}}`
      );

      // Publish the package and tag it.
      if (!dry) {
        await exec(`npm publish --tag=${tag} --otp=${otp}`, {
          cwd: packagePath,
        });
      }
      console.log(theme.command(`  cd ${packagePath}`));
      console.log(theme.command(`  npm publish --tag=${tag} --otp=${otp}`));

      if (tag === 'latest') {
        // Whenever we publish latest, also tag "next" automatically so they're in sync.
        if (!dry) {
          await exec(
            `npm dist-tag add ${packageName}@${version} next --otp=${otp}`
          );
        }
        console.log(
          theme.command(
            `  npm dist-tag add ${packageName}@${version} next --otp=${otp}`
          )
        );
      } else if (tag === 'untagged') {
        // npm doesn't let us publish without a tag at all,
        // so for one-off publishes we clean it up ourselves.
        if (!dry) {
          await exec(`npm dist-tag rm ${packageName}@untagged --otp=${otp}`);
        }
        console.log(
          theme.command(`npm dist-tag rm ${packageName}@untagged --otp=${otp}`)
        );
      }
    }
  }
};

module.exports = run;