diff options
Diffstat (limited to 'tools/node_modules/eslint/node_modules/json-stable-stringify-without-jsonify/index.js')
-rw-r--r-- | tools/node_modules/eslint/node_modules/json-stable-stringify-without-jsonify/index.js | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/tools/node_modules/eslint/node_modules/json-stable-stringify-without-jsonify/index.js b/tools/node_modules/eslint/node_modules/json-stable-stringify-without-jsonify/index.js new file mode 100644 index 0000000000..a6f40c7b71 --- /dev/null +++ b/tools/node_modules/eslint/node_modules/json-stable-stringify-without-jsonify/index.js @@ -0,0 +1,82 @@ +module.exports = function (obj, opts) { + if (!opts) opts = {}; + if (typeof opts === 'function') opts = { cmp: opts }; + var space = opts.space || ''; + if (typeof space === 'number') space = Array(space+1).join(' '); + var cycles = (typeof opts.cycles === 'boolean') ? opts.cycles : false; + var replacer = opts.replacer || function(key, value) { return value; }; + + var cmp = opts.cmp && (function (f) { + return function (node) { + return function (a, b) { + var aobj = { key: a, value: node[a] }; + var bobj = { key: b, value: node[b] }; + return f(aobj, bobj); + }; + }; + })(opts.cmp); + + var seen = []; + return (function stringify (parent, key, node, level) { + var indent = space ? ('\n' + new Array(level + 1).join(space)) : ''; + var colonSeparator = space ? ': ' : ':'; + + if (node && node.toJSON && typeof node.toJSON === 'function') { + node = node.toJSON(); + } + + node = replacer.call(parent, key, node); + + if (node === undefined) { + return; + } + if (typeof node !== 'object' || node === null) { + return JSON.stringify(node); + } + if (isArray(node)) { + var out = []; + for (var i = 0; i < node.length; i++) { + var item = stringify(node, i, node[i], level+1) || JSON.stringify(null); + out.push(indent + space + item); + } + return '[' + out.join(',') + indent + ']'; + } + else { + if (seen.indexOf(node) !== -1) { + if (cycles) return JSON.stringify('__cycle__'); + throw new TypeError('Converting circular structure to JSON'); + } + else seen.push(node); + + var keys = objectKeys(node).sort(cmp && cmp(node)); + var out = []; + for (var i = 0; i < keys.length; i++) { + var key = keys[i]; + var value = stringify(node, key, node[key], level+1); + + if(!value) continue; + + var keyValue = JSON.stringify(key) + + colonSeparator + + value; + ; + out.push(indent + space + keyValue); + } + seen.splice(seen.indexOf(node), 1); + return '{' + out.join(',') + indent + '}'; + } + })({ '': obj }, '', obj, 0); +}; + +var isArray = Array.isArray || function (x) { + return {}.toString.call(x) === '[object Array]'; +}; + +var objectKeys = Object.keys || function (obj) { + var has = Object.prototype.hasOwnProperty || function () { return true }; + var keys = []; + for (var key in obj) { + if (has.call(obj, key)) keys.push(key); + } + return keys; +}; |