peek42/dist/peek42.node.mjs

Touch based browser console

import EventEmitter from 'events';

const name = "peek42";
const version = "5.9.2";

function _isNullProtoObject(val) {
  return typeof val === 'object' && val !== null && val.__proto__ === undefined;
}

function _string(val) {
  return _isNullProtoObject(val) ? '[object Object(proto:Null)]' : String(val);
}

function _comment(comment, val, note = undefined) {
  if (comment !== undefined && comment !== '') {
    return comment;
  }

  let str = _string(val).replace(/\s+/gm, ' ');

  let max = 69;

  if (str.length > max) {
    str = `${str.substr(0, max)}...`;
  }

  return note === undefined ? str : `(${note}) ${str}`;
}

const _outputOptsDefaults = {
  level: 'log',
  collapsed: false
};

function _prettyMakesSense(val) {
  return val instanceof Object && !(val instanceof Function) || _isNullProtoObject(val);
}

function pretty(val) {
  let objs = [];
  let keys = [];
  return JSON.stringify(val, (k, v) => {
    if (v instanceof Object || _isNullProtoObject(v)) {
      let seen = objs.indexOf(v);

      if (seen === -1) {
        objs.push(v);
        keys.push(k || 'ROOT');
        return v;
      }

      return `${_string(v)} (ref to ${keys[seen]})`;
    }

    return v;
  }, 2);
}

function p(val, comment = undefined, opts = undefined) {
  peek42._output(val, _comment(comment, val, 'value'), opts);
}

p.pretty = function (val, comment = undefined, opts = undefined) {
  peek42._output(_prettyMakesSense(val) ? pretty(val) : val, _comment(comment, val, 'pretty'), opts);
};

function pp(...args) {
  (p.inspect ? p.inspect : p.pretty)(...args);
}

function use(lib) {
  Object.assign(p, lib.peek42(p, _comment));
  return peek42;
}

const peek42 = {
  get [Symbol.toStringTag]() {
    return name;
  },

  version: version,
  pretty,
  p,
  pp,
  use
};

function _defineProperty(obj, key, value) {
  if (key in obj) {
    Object.defineProperty(obj, key, {
      value: value,
      enumerable: true,
      configurable: true,
      writable: true
    });
  } else {
    obj[key] = value;
  }

  return obj;
}

function _objectSpread(target) {
  for (var i = 1; i < arguments.length; i++) {
    var source = arguments[i] != null ? arguments[i] : {};
    var ownKeys = Object.keys(source);

    if (typeof Object.getOwnPropertySymbols === 'function') {
      ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) {
        return Object.getOwnPropertyDescriptor(source, sym).enumerable;
      }));
    }

    ownKeys.forEach(function (key) {
      _defineProperty(target, key, source[key]);
    });
  }

  return target;
}

const cable = {
  __proto__: EventEmitter.prototype,

  // Call as early as possible on new client connecting

  /* e.g. in a pre-routing http get middleware
    httpRouter.get('/', (ctx, next) => {
      peek42.cable.init0();
       next();
    });
  */
  init0() {
    this.init(null);
  },

  // Between init0 and init calls, any cp call will
  // wait for the websocket promise to resolve.
  // (If init0 is not called, there will be a dead zone during
  // which cp calls will use the previous (probably stale)
  // peek42 websocket)
  // Call as soon as peek42 websocket is available

  /* e.g. in the peek42 websocket get middleware
    wsRouter.get('/peek42', ctx => {
      peek42.cable.init(ctx.websocket);
    });
  */
  init(websocket) {
    if (this._websocket) {
      this._websocket.terminate();
    }

    if (!websocket) {
      this._websocket = null;
    } else {
      this._websocket = websocket;
      this.emit('ready');
    }
  },

  get websocket() {
    return new Promise((resolve, reject) => {
      if (this._websocket) {
        resolve(this._websocket);
      } else {
        this.on('ready', () => resolve(this._websocket));
      }
    });
  }

};

const _send = async (val, comment, opts) => (await cable.websocket).send(JSON.stringify({
  val,
  comment,
  opts
}));

function _output(val, comment, opts = {}) {
  opts = _objectSpread({}, _outputOptsDefaults, opts);
  let str = comment === null ? _string(val) : `// ${String(comment)}\n${_string(val)}`;
  console[opts.level](str);
}

function cp(val, comment = undefined, opts = undefined) {
  _send(val, _comment(comment, val, 'value'), opts);
}

function cpp(val, comment = undefined, opts = undefined) {
  _send(_prettyMakesSense(val) ? pretty(val) : val, _comment(comment, val, 'pretty'), opts);
}

p.trace = (comment = undefined, opts = undefined) => {
  let stack = (new Error().stack || '\n').split('\n').map(entry => entry.trim());
  let trace = (stack.shift(), stack.shift(), stack);
  let loc = trace[0];

  _output(trace.join('\n'), _comment(comment, loc, `trace`), opts);
};

cp.trace = (comment = undefined, opts = undefined) => {
  let stack = (new Error().stack || '\n').split('\n').map(entry => entry.trim());
  let trace = (stack.shift(), stack.shift(), stack);
  let loc = trace[0];

  _send(trace.join('\n'), _comment(comment, loc, `trace`), opts);
};

function use$1(lib) {
  Object.assign(p, lib.peek42(p, _comment));
  Object.assign(cp, lib.peek42(cp, _comment));
  return peek42;
}

Object.assign(peek42, {
  _output,
  cable,
  cp,
  cpp,
  use: use$1 // Overwrite the value from '../universal/base'

});

export default peek42;
export { pretty, p, pp };
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