read-conf/lib/pluginRead.js

reads a config file

var importCwd;

importCwd = null;

module.exports = ({read, position}) => {
  read.hookIn(position.init, async(noop, o) => {
    var conf, ext, exts, files, folder, folders, i, j, len, len1, pathExists, readdir, resolve, tmp;
    ({resolve} = o.path);
    if (o.filename == null) {
      if (o.name == null) {
        if (o.required !== false) {
          throw new Error("read-conf: no name or filename for config was given");
        }
      }
      ({readdir, pathExists} = o.fs);
      folders = o.folders || [process.cwd()];
      if (!Array.isArray(folders)) {
        folders = [folders];
      }
      exts = o.extensions || ["js", "coffee", "ts", "json"];
      for (i = 0, len = folders.length; i < len; i++) {
        folder = folders[i];
        folder = resolve(folder);
        if ((await pathExists(folder))) {
          files = (await readdir(folder));
          for (j = 0, len1 = exts.length; j < len1; j++) {
            ext = exts[j];
            if (~files.indexOf(tmp = `${o.name}.${ext}`)) {
              conf = tmp;
              break;
            }
          }
          if (conf) {
            break;
          }
        }
      }
      if (conf) {
        return o.filename = resolve(folder, conf);
      }
    } else {
      return o.filename = resolve(o.filename);
    }
  });
  read.hookIn(position.before, (noop, o) => {
    var stat;
    if (o.filename != null) {
      ({stat} = o.fs);
      return stat(o.filename).then((stats) => {
        return o.mtime = stats.mtimeMs;
      }).catch(() => {
        if (o.name == null) {
          o.name = o.filename;
        }
        return o.filename = null;
      }).then(() => {
        if (o.filename && (importCwd == null)) {
          importCwd = require("import-cwd");
          importCwd.silent("coffee-script/register");
          importCwd.silent("coffeescript/register");
          importCwd.silent("ts-node/register");
          return importCwd.silent("babel-register");
        }
      });
    }
  });
  return read.hookIn((noop, o) => {
    var conf, e;
    if (o.filename != null) {
      try {
        conf = require(o.filename);
      } catch (error) {
        e = error;
        if (e.code === "MODULE_NOT_FOUND") {
          if (o.required !== false) {
            throw new Error(`read-conf: couldn't require '${confPath}'`);
          }
        } else {
          throw e;
        }
      }
    } else if (o.required !== false) {
      throw new Error(`read-conf: no file '${o.name}' found`);
    }
    o.raw = conf || {};
    return o.hash = o.util.hash(o.raw);
  });
};