'use strict';
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function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
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function _toConsumableArray(r) { return _arrayWithoutHoles(r) || _iterableToArray(r) || _unsupportedIterableToArray(r) || _nonIterableSpread(); }
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function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
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function _unsupportedIterableToArray(r, a) { if (r) { if ("string" == typeof r) return _arrayLikeToArray(r, a); var t = {}.toString.call(r).slice(8, -1); return "Object" === t && r.constructor && (t = r.constructor.name), "Map" === t || "Set" === t ? Array.from(r) : "Arguments" === t || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(t) ? _arrayLikeToArray(r, a) : void 0; } }
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function _iterableToArray(r) { if ("undefined" != typeof Symbol && null != r[Symbol.iterator] || null != r["@@iterator"]) return Array.from(r); }
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function _arrayWithoutHoles(r) { if (Array.isArray(r)) return _arrayLikeToArray(r); }
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function _arrayLikeToArray(r, a) { (null == a || a > r.length) && (a = r.length); for (var e = 0, n = Array(a); e < a; e++) n[e] = r[e]; return n; }
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function _classCallCheck(a, n) { if (!(a instanceof n)) throw new TypeError("Cannot call a class as a function"); }
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function _defineProperties(e, r) { for (var t = 0; t < r.length; t++) { var o = r[t]; o.enumerable = o.enumerable || !1, o.configurable = !0, "value" in o && (o.writable = !0), Object.defineProperty(e, _toPropertyKey(o.key), o); } }
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function _createClass(e, r, t) { return r && _defineProperties(e.prototype, r), t && _defineProperties(e, t), Object.defineProperty(e, "prototype", { writable: !1 }), e; }
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function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == _typeof(i) ? i : i + ""; }
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function _toPrimitive(t, r) { if ("object" != _typeof(t) || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != _typeof(i)) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
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var util = require('util');
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var _require = require('triple-beam'),
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SPLAT = _require.SPLAT;
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/**
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* Captures the number of format (i.e. %s strings) in a given string.
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* Based on `util.format`, see Node.js source:
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* https://github.com/nodejs/node/blob/b1c8f15c5f169e021f7c46eb7b219de95fe97603/lib/util.js#L201-L230
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* @type {RegExp}
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*/
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var formatRegExp = /%[scdjifoO%]/g;
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/**
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* Captures the number of escaped % signs in a format string (i.e. %s strings).
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* @type {RegExp}
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*/
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var escapedPercent = /%%/g;
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var Splatter = /*#__PURE__*/function () {
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function Splatter(opts) {
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_classCallCheck(this, Splatter);
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this.options = opts;
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}
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/**
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* Check to see if tokens <= splat.length, assign { splat, meta } into the
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* `info` accordingly, and write to this instance.
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*
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* @param {Info} info Logform info message.
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* @param {String[]} tokens Set of string interpolation tokens.
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* @returns {Info} Modified info message
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* @private
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*/
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return _createClass(Splatter, [{
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key: "_splat",
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value: function _splat(info, tokens) {
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var msg = info.message;
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var splat = info[SPLAT] || info.splat || [];
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var percents = msg.match(escapedPercent);
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var escapes = percents && percents.length || 0;
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// The expected splat is the number of tokens minus the number of escapes
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// e.g.
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// - { expectedSplat: 3 } '%d %s %j'
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// - { expectedSplat: 5 } '[%s] %d%% %d%% %s %j'
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//
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// Any "meta" will be arugments in addition to the expected splat size
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// regardless of type. e.g.
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//
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// logger.log('info', '%d%% %s %j', 100, 'wow', { such: 'js' }, { thisIsMeta: true });
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// would result in splat of four (4), but only three (3) are expected. Therefore:
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//
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// extraSplat = 3 - 4 = -1
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// metas = [100, 'wow', { such: 'js' }, { thisIsMeta: true }].splice(-1, -1 * -1);
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// splat = [100, 'wow', { such: 'js' }]
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var expectedSplat = tokens.length - escapes;
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var extraSplat = expectedSplat - splat.length;
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var metas = extraSplat < 0 ? splat.splice(extraSplat, -1 * extraSplat) : [];
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// Now that { splat } has been separated from any potential { meta }. we
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// can assign this to the `info` object and write it to our format stream.
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// If the additional metas are **NOT** objects or **LACK** enumerable properties
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// you are going to have a bad time.
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var metalen = metas.length;
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if (metalen) {
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for (var i = 0; i < metalen; i++) {
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Object.assign(info, metas[i]);
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}
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}
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info.message = util.format.apply(util, [msg].concat(_toConsumableArray(splat)));
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return info;
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}
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/**
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* Transforms the `info` message by using `util.format` to complete
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* any `info.message` provided it has string interpolation tokens.
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* If no tokens exist then `info` is immutable.
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*
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* @param {Info} info Logform info message.
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* @param {Object} opts Options for this instance.
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* @returns {Info} Modified info message
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*/
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}, {
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key: "transform",
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value: function transform(info) {
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var msg = info.message;
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var splat = info[SPLAT] || info.splat;
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// No need to process anything if splat is undefined
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if (!splat || !splat.length) {
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return info;
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}
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// Extract tokens, if none available default to empty array to
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// ensure consistancy in expected results
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var tokens = msg && msg.match && msg.match(formatRegExp);
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// This condition will take care of inputs with info[SPLAT]
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// but no tokens present
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if (!tokens && (splat || splat.length)) {
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var metas = splat.length > 1 ? splat.splice(0) : splat;
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// Now that { splat } has been separated from any potential { meta }. we
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// can assign this to the `info` object and write it to our format stream.
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// If the additional metas are **NOT** objects or **LACK** enumerable properties
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// you are going to have a bad time.
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var metalen = metas.length;
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if (metalen) {
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for (var i = 0; i < metalen; i++) {
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Object.assign(info, metas[i]);
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}
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}
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return info;
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}
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if (tokens) {
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return this._splat(info, tokens);
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}
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return info;
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}
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}]);
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}();
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/*
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* function splat (info)
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* Returns a new instance of the splat format TransformStream
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* which performs string interpolation from `info` objects. This was
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* previously exposed implicitly in `winston < 3.0.0`.
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*/
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module.exports = function (opts) {
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return new Splatter(opts);
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};
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