sgauthier
6e64e138e2
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100 lines
2.6 KiB
JavaScript
100 lines
2.6 KiB
JavaScript
"use strict";
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// Note: This regex matches even invalid JSON strings, but since we’re
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// working on the output of `JSON.stringify` we know that only valid strings
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// are present (unless the user supplied a weird `options.indent` but in
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// that case we don’t care since the output would be invalid anyway).
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var stringOrChar = /("(?:[^\\"]|\\.)*")|[:,]/g;
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module.exports = function stringify(passedObj, options) {
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var indent, maxLength, replacer;
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options = options || {};
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indent = JSON.stringify(
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[1],
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undefined,
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options.indent === undefined ? 2 : options.indent
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).slice(2, -3);
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maxLength =
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indent === ""
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? Infinity
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: options.maxLength === undefined
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? 80
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: options.maxLength;
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replacer = options.replacer;
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return (function _stringify(obj, currentIndent, reserved) {
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// prettier-ignore
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var end, index, items, key, keyPart, keys, length, nextIndent, prettified, start, string, value;
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if (obj && typeof obj.toJSON === "function") {
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obj = obj.toJSON();
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}
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string = JSON.stringify(obj, replacer);
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if (string === undefined) {
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return string;
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}
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length = maxLength - currentIndent.length - reserved;
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if (string.length <= length) {
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prettified = string.replace(stringOrChar, function(match, stringLiteral) {
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return stringLiteral || match + " ";
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});
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if (prettified.length <= length) {
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return prettified;
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}
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}
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if (replacer != null) {
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obj = JSON.parse(string);
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replacer = undefined;
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}
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if (typeof obj === "object" && obj !== null) {
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nextIndent = currentIndent + indent;
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items = [];
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index = 0;
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if (Array.isArray(obj)) {
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start = "[";
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end = "]";
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length = obj.length;
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for (; index < length; index++) {
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items.push(
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_stringify(obj[index], nextIndent, index === length - 1 ? 0 : 1) ||
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"null"
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);
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}
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} else {
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start = "{";
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end = "}";
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keys = Object.keys(obj);
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length = keys.length;
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for (; index < length; index++) {
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key = keys[index];
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keyPart = JSON.stringify(key) + ": ";
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value = _stringify(
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obj[key],
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nextIndent,
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keyPart.length + (index === length - 1 ? 0 : 1)
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);
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if (value !== undefined) {
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items.push(keyPart + value);
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}
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}
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}
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if (items.length > 0) {
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return [start, indent + items.join(",\n" + nextIndent), end].join(
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"\n" + currentIndent
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);
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}
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}
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return string;
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})(passedObj, "", 0);
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};
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