highland-json/lib/index.js

JSON stringify stream for highland.js

'use strict';

Object.defineProperty(exports, "__esModule", {
	value: true
});
exports.patchStream = exports.objectToStream = exports.stringifyObjWithOptions = exports.stringifyObj = exports.stringifyWithOptions = exports.stringify = undefined;

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

var _highland = require('highland');

var _highland2 = _interopRequireDefault(_highland);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var stringify = exports.stringify = function stringify(options) {
	if (_highland2.default.isStream(options)) {
		return stringifyWithOptions(options);
	};
	return function (stream) {
		return stringifyWithOptions(stream, options);
	};
};

var stringifyWithOptions = exports.stringifyWithOptions = function stringifyWithOptions(stream, options) {
	var isFirst = true;
	var s = (0, _highland2.default)(['[']).concat(stream.flatMap(function (obj) {
		var prefix = ',';
		if (isFirst) {
			isFirst = false;
			prefix = '';
		}

		if (_highland2.default.isStream(obj)) {
			if (obj.__isJSON) {
				return (0, _highland2.default)([prefix]).concat(obj);
			}
			return (0, _highland2.default)([prefix]).concat(stringifyWithOptions(obj, options));
		}
		if (stream.__isJSON) {
			return (0, _highland2.default)([prefix, obj]);
		}

		var jsonString = options && typeof options.stringify === 'function' ? options.stringify(obj, stream) : JSON.stringify(obj);
		return (0, _highland2.default)([prefix, jsonString]);
	})).append(']');
	s.__isJSON = true;
	return patchStream(s);
};

var stringifyObj = exports.stringifyObj = function stringifyObj(options) {
	if (_highland2.default.isStream(options)) {
		return stringifyObjWithOptions(options);
	};
	return function (stream) {
		return stringifyObjWithOptions(stream, options);
	};
};

var stringifyObjWithOptions = exports.stringifyObjWithOptions = function stringifyObjWithOptions(stream, options) {
	var isFirst = true;
	var s = (0, _highland2.default)(['{']).concat(stream.flatMap(function (obj) {
		if (Array.isArray(obj)) {
			// Good format: [key, value]
			// pass along
			return (0, _highland2.default)([obj]);
		} else if ((typeof obj === 'undefined' ? 'undefined' : _typeof(obj)) === "object") {
			// Get a object like { a: b, c: d }
			// Transform to [ [a, b], [c, d] ]
			return objectToStream(obj);
		}
		throw "Cannot handle this format";
	}).flatMap(function (obj) {
		var text = ",";
		if (isFirst) {
			isFirst = false;
			text = "";
		}
		text += JSON.stringify(obj[0]) + ":";

		if (_highland2.default.isStream(obj[1])) {
			if (obj[1].__isJSON) {
				return (0, _highland2.default)([text]).concat(obj[1]);
			}
			return (0, _highland2.default)([text]).concat(stringifyWithOptions(obj[1], options));
		}
		var jsonString = stream.__isJSON ? obj : options && typeof options.stringify === 'function' ? options.stringify(obj[1], stream) : JSON.stringify(obj[1]);
		return (0, _highland2.default)([text, jsonString]);
	})).append('}');
	s.__isJSON = true;
	return patchStream(s);
};

var objectToStream = exports.objectToStream = function objectToStream(obj) {
	return (0, _highland2.default)(Object.keys(obj)).map(function (key) {
		return [key, obj[key]];
	});
};

/**
 * Path common functions such the __isJSON property is retained
 */

var patchStream = exports.patchStream = function patchStream(stream) {
	var methods = ['doto', 'errors', 'tap', 'throttle', 'fork', 'stopOnError', 'consume', 'observe'];
	methods.forEach(function (key) {
		var original = stream[key];
		stream[key] = function () {
			var result = original.apply(this, arguments);
			result.__isJSON = true;
			return patchStream(result);
		};
	});
	return stream;
};
//# sourceMappingURL=data:application/json;charset=utf8;base64,{"version":3,"sources":["index.js"],"names":["stringify","_","isStream","options","stringifyWithOptions","stream","isFirst","s","concat","flatMap","prefix","obj","__isJSON","jsonString","JSON","append","patchStream","stringifyObj","stringifyObjWithOptions","Array","isArray","objectToStream","text","Object","keys","map","key","methods","forEach","original","result","apply","arguments"],"mappings":"AAAA;;;;;;;;;AAEA;;;;;;AAEO,IAAMA,gCAAY,SAAZA,SAAY,UAAW;AACnC,KAAIC,mBAAEC,QAAF,CAAWC,OAAX,CAAJ,EAAyB;AACxB,SAAOC,qBAAqBD,OAArB,CAAP;AACA;AACD,QAAO;AAAA,SAAUC,qBAAqBC,MAArB,EAA6BF,OAA7B,CAAV;AAAA,EAAP;AACA,CALM;;AAOA,IAAMC,sDAAuB,SAAvBA,oBAAuB,CAACC,MAAD,EAASF,OAAT,EAAqB;AACxD,KAAIG,UAAU,IAAd;AACA,KAAMC,IAAI,wBAAE,CAAC,GAAD,CAAF,EACRC,MADQ,CACDH,OAAOI,OAAP,CAAe,eAAM;AAC5B,MAAIC,SAAS,GAAb;AACA,MAAIJ,OAAJ,EAAa;AACZA,aAAU,KAAV;AACAI,YAAS,EAAT;AACA;;AAED,MAAIT,mBAAEC,QAAF,CAAWS,GAAX,CAAJ,EAAqB;AACpB,OAAIA,IAAIC,QAAR,EAAkB;AACjB,WAAO,wBAAE,CAACF,MAAD,CAAF,EAAYF,MAAZ,CAAmBG,GAAnB,CAAP;AACA;AACD,UAAO,wBAAE,CAACD,MAAD,CAAF,EAAYF,MAAZ,CAAmBJ,qBAAqBO,GAArB,EAA0BR,OAA1B,CAAnB,CAAP;AACA;AACD,MAAIE,OAAOO,QAAX,EAAqB;AACpB,UAAO,wBAAE,CAACF,MAAD,EAASC,GAAT,CAAF,CAAP;AACA;;AAED,MAAIE,aACHV,WAAW,OAAOA,QAAQH,SAAf,KAA6B,UAAxC,GACEG,QAAQH,SAAR,CAAkBW,GAAlB,EAAuBN,MAAvB,CADF,GAEES,KAAKd,SAAL,CAAeW,GAAf,CAHH;AAIA,SAAO,wBAAE,CAACD,MAAD,EAASG,UAAT,CAAF,CAAP;AACA,EAtBO,CADC,EAwBRE,MAxBQ,CAwBD,GAxBC,CAAV;AAyBAR,GAAEK,QAAF,GAAa,IAAb;AACA,QAAOI,YAAYT,CAAZ,CAAP;AACA,CA7BM;;AA+BA,IAAMU,sCAAe,SAAfA,YAAe,UAAW;AACtC,KAAIhB,mBAAEC,QAAF,CAAWC,OAAX,CAAJ,EAAyB;AACxB,SAAOe,wBAAwBf,OAAxB,CAAP;AACA;AACD,QAAO;AAAA,SAAUe,wBAAwBb,MAAxB,EAAgCF,OAAhC,CAAV;AAAA,EAAP;AACA,CALM;;AAOA,IAAMe,4DAA0B,SAA1BA,uBAA0B,CAACb,MAAD,EAASF,OAAT,EAAqB;AAC3D,KAAIG,UAAU,IAAd;AACA,KAAMC,IAAI,wBAAE,CAAC,GAAD,CAAF,EACRC,MADQ,CACDH,OACNI,OADM,CACE,eAAM;AACd,MAAIU,MAAMC,OAAN,CAAcT,GAAd,CAAJ,EAAwB;AACvB;AACA;AACA,UAAO,wBAAE,CAACA,GAAD,CAAF,CAAP;AACA,GAJD,MAIO,IAAI,QAAOA,GAAP,yCAAOA,GAAP,OAAe,QAAnB,EAA6B;AACnC;AACA;AACA,UAAOU,eAAeV,GAAf,CAAP;AACA;AACD,QAAM,2BAAN;AACA,EAZM,EAaNF,OAbM,CAaE,eAAM;AACd,MAAIa,OAAO,GAAX;AACA,MAAIhB,OAAJ,EAAa;AACZA,aAAU,KAAV;AACAgB,UAAO,EAAP;AACA;AACDA,UAAQR,KAAKd,SAAL,CAAeW,IAAI,CAAJ,CAAf,IAAyB,GAAjC;;AAEA,MAAIV,mBAAEC,QAAF,CAAWS,IAAI,CAAJ,CAAX,CAAJ,EAAwB;AACvB,OAAIA,IAAI,CAAJ,EAAOC,QAAX,EAAqB;AACpB,WAAO,wBAAE,CAACU,IAAD,CAAF,EAAUd,MAAV,CAAiBG,IAAI,CAAJ,CAAjB,CAAP;AACA;AACD,UAAO,wBAAE,CAACW,IAAD,CAAF,EAAUd,MAAV,CAAiBJ,qBAAqBO,IAAI,CAAJ,CAArB,EAA6BR,OAA7B,CAAjB,CAAP;AACA;AACD,MAAIU,aACHR,OAAOO,QAAP,GACED,GADF,GAEER,WAAW,OAAOA,QAAQH,SAAf,KAA6B,UAAxC,GACAG,QAAQH,SAAR,CAAkBW,IAAI,CAAJ,CAAlB,EAA0BN,MAA1B,CADA,GAEAS,KAAKd,SAAL,CAAeW,IAAI,CAAJ,CAAf,CALH;AAMA,SAAO,wBAAE,CAACW,IAAD,EAAOT,UAAP,CAAF,CAAP;AACA,EAlCM,CADC,EAqCRE,MArCQ,CAqCD,GArCC,CAAV;AAsCAR,GAAEK,QAAF,GAAa,IAAb;AACA,QAAOI,YAAYT,CAAZ,CAAP;AACA,CA1CM;;AA4CA,IAAMc,0CAAiB,SAAjBA,cAAiB;AAAA,QAC7B,wBAAEE,OAAOC,IAAP,CAAYb,GAAZ,CAAF,EAAoBc,GAApB,CAAwB;AAAA,SAAO,CAACC,GAAD,EAAMf,IAAIe,GAAJ,CAAN,CAAP;AAAA,EAAxB,CAD6B;AAAA,CAAvB;;AAGP;;;;AAIO,IAAMV,oCAAc,SAAdA,WAAc,SAAU;AACpC,KAAMW,UAAU,CAAC,MAAD,EAAS,QAAT,EAAmB,KAAnB,EAA0B,UAA1B,EAAsC,MAAtC,EAA8C,aAA9C,EAA6D,SAA7D,EAAwE,SAAxE,CAAhB;AACAA,SAAQC,OAAR,CAAgB,eAAO;AACtB,MAAMC,WAAWxB,OAAOqB,GAAP,CAAjB;AACArB,SAAOqB,GAAP,IAAc,YAAW;AACxB,OAAMI,SAASD,SAASE,KAAT,CAAe,IAAf,EAAqBC,SAArB,CAAf;AACAF,UAAOlB,QAAP,GAAkB,IAAlB;AACA,UAAOI,YAAYc,MAAZ,CAAP;AACA,GAJD;AAKA,EAPD;AAQA,QAAOzB,MAAP;AACA,CAXM","file":"index.js","sourcesContent":["'use strict';\n\nimport _ from 'highland';\n\nexport const stringify = options => {\n\tif (_.isStream(options)) {\n\t\treturn stringifyWithOptions(options);\n\t};\n\treturn stream => stringifyWithOptions(stream, options);\n}\n\nexport const stringifyWithOptions = (stream, options) => {\n\tlet isFirst = true;\n\tconst s = _(['['])\n\t\t.concat(stream.flatMap(obj=> {\n\t\t\tlet prefix = ',';\n\t\t\tif (isFirst) {\n\t\t\t\tisFirst = false;\n\t\t\t\tprefix = '';\n\t\t\t}\n\n\t\t\tif (_.isStream(obj)) {\n\t\t\t\tif (obj.__isJSON) {\n\t\t\t\t\treturn _([prefix]).concat(obj);\n\t\t\t\t}\n\t\t\t\treturn _([prefix]).concat(stringifyWithOptions(obj, options));\n\t\t\t}\n\t\t\tif (stream.__isJSON) {\n\t\t\t\treturn _([prefix, obj]);\n\t\t\t}\n\n\t\t\tlet jsonString = \n\t\t\t\toptions && typeof options.stringify === 'function'\n\t\t\t\t? options.stringify(obj, stream)\n\t\t\t\t: JSON.stringify(obj);\n\t\t\treturn _([prefix, jsonString]);\n\t\t}))\n\t\t.append(']');\n\ts.__isJSON = true;\n\treturn patchStream(s);\n};\n\nexport const stringifyObj = options => {\n\tif (_.isStream(options)) {\n\t\treturn stringifyObjWithOptions(options);\n\t};\n\treturn stream => stringifyObjWithOptions(stream, options);\n}\n\nexport const stringifyObjWithOptions = (stream, options) => {\n\tlet isFirst = true;\n\tconst s = _(['{'])\n\t\t.concat(stream\n\t\t\t.flatMap(obj=> {\n\t\t\t\tif (Array.isArray(obj)) {\n\t\t\t\t\t// Good format: [key, value]\n\t\t\t\t\t// pass along\n\t\t\t\t\treturn _([obj]);\n\t\t\t\t} else if (typeof obj === \"object\") {\n\t\t\t\t\t// Get a object like { a: b, c: d }\n\t\t\t\t\t// Transform to [ [a, b], [c, d] ]\n\t\t\t\t\treturn objectToStream(obj);\n\t\t\t\t}\n\t\t\t\tthrow \"Cannot handle this format\";\n\t\t\t})\n\t\t\t.flatMap(obj=> {\n\t\t\t\tlet text = \",\";\n\t\t\t\tif (isFirst) {\n\t\t\t\t\tisFirst = false;\n\t\t\t\t\ttext = \"\";\n\t\t\t\t}\n\t\t\t\ttext += JSON.stringify(obj[0]) + \":\";\n\n\t\t\t\tif (_.isStream(obj[1])) {\n\t\t\t\t\tif (obj[1].__isJSON) {\n\t\t\t\t\t\treturn _([text]).concat(obj[1]);\n\t\t\t\t\t}\n\t\t\t\t\treturn _([text]).concat(stringifyWithOptions(obj[1], options));\n\t\t\t\t}\n\t\t\t\tlet jsonString =\n\t\t\t\t\tstream.__isJSON\n\t\t\t\t\t? obj\n\t\t\t\t\t: options && typeof options.stringify === 'function'\n\t\t\t\t\t? options.stringify(obj[1], stream)\n\t\t\t\t\t: JSON.stringify(obj[1]);\n\t\t\t\treturn _([text, jsonString]);\n\t\t\t})\n\t\t)\n\t\t.append('}');\n\ts.__isJSON = true;\n\treturn patchStream(s);\n}\n\nexport const objectToStream = obj =>\n\t_(Object.keys(obj)).map(key => [key, obj[key]])\n\n/**\n * Path common functions such the __isJSON property is retained\n */\n\nexport const patchStream = stream => {\n\tconst methods = ['doto', 'errors', 'tap', 'throttle', 'fork', 'stopOnError', 'consume', 'observe'];\n\tmethods.forEach(key => {\n\t\tconst original = stream[key];\n\t\tstream[key] = function() {\n\t\t\tconst result = original.apply(this, arguments);\n\t\t\tresult.__isJSON = true;\n\t\t\treturn patchStream(result);\n\t\t}\n\t})\n\treturn stream;\n}\n"]}