work.suroh.tk/node_modules/condense-newlines/index.js

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2019-12-02 12:22:45 +00:00
/*!
* condense-newlines <https://github.com/jonschlinkert/condense-newlines>
*
* Copyright (c) 2014 Jon Schlinkert, contributors.
* Licensed under the MIT License
*/
'use strict';
var isWhitespace = require('is-whitespace');
var extend = require('extend-shallow');
var typeOf = require('kind-of');
module.exports = function(str, options) {
var opts = extend({}, options);
var sep = opts.sep || '\n\n';
var min = opts.min;
var re;
if (typeof min === 'number' && min !== 2) {
re = new RegExp('(\\r\\n|\\n|\\u2424) {' + min + ',}');
}
if (typeof re === 'undefined') {
re = opts.regex || /(\r\n|\n|\u2424){2,}/g;
}
// if a line is 100% whitespace it will be trimmed, so that
// later we can condense newlines correctly
if (opts.keepWhitespace !== true) {
str = str.split('\n').map(function(line) {
return isWhitespace(line) ? line.trim() : line;
}).join('\n');
}
str = trailingNewline(str, opts);
return str.replace(re, sep);
};
function trailingNewline(str, options) {
var val = options.trailingNewline;
if (val === false) {
return str;
}
switch (typeOf(val)) {
case 'string':
str = str.replace(/\s+$/, options.trailingNewline);
break;
case 'function':
str = options.trailingNewline(str);
break;
case 'undefined':
case 'boolean':
default: {
str = str.replace(/\s+$/, '\n');
break;
}
}
return str;
}