@v4fire/core/build/helpers.js

V4Fire core library

'use strict';
const fs = require('fs'),
  path = require('upath');
const template = require('@babel/template').default,
  {
    ensureStatementsHoisted
  } = require('@babel/helper-module-transforms');
exports.getProjectInfo = function getProjectInfo() {
  const info = include('package.json');
  return Object.select(info, ['name', 'version']);
};
exports.getHead = function getHead(withVersion) {
  return fs.readFileSync(path.join(process.cwd(), 'disclaimer.txt'), 'utf-8').replace(/\* (\w.*?)(?=\n)/, str => str + (withVersion ? ` v${exports.getProjectInfo().version}` : ''));
};
exports.redefineRequire = function redefineRequire() {
  const path = require('upath');
  const {
      src
    } = require('@config/config'),
    {
      config: pzlr,
      resolve
    } = require('@pzlr/build-core');
  const staticRequire = require,
    cache = Object.create(null);
  const outputDest = src.serverOutput();
  const lib = path.join(outputDest, 'node_modules'),
    deps = pzlr.dependencies;
  require = url => {
    if (url in cache) {
      return staticRequire(cache[url]);
    }
    const resolvedURL = require.resolve(url);
    cache[url] = resolvedURL;
    return staticRequire(resolvedURL);
  };
  require.cache = staticRequire.cache;
  require.extensions = staticRequire.extensions;
  require.main = staticRequire.main;
  require.resolve = (url, opts) => {
    if (resolve.isNodeModule(url)) {
      let resolveUrl;
      for (let i = 0; i < deps.length + 1; i++) {
        try {
          if (i === 0) {
            resolveUrl = staticRequire.resolve(path.join(outputDest, url), opts);
          } else {
            resolveUrl = staticRequire.resolve(path.join(lib, deps[i - 1], url), opts);
          }
          break;
        } catch {}
      }
      if (resolveUrl) {
        return resolveUrl;
      }
    }
    return staticRequire.resolve(url, opts);
  };
  require('core/prelude');
};
exports.prependCode = function prependCode(code) {
  return function prependCode() {
    return {
      visitor: {
        Program: {
          exit(path) {
            const node = template.ast(code, {
              preserveComments: true
            });
            ensureStatementsHoisted([node]);
            path.unshiftContainer('body', node);
          }
        }
      }
    };
  };
};