94 lines
2.5 KiB
JavaScript
94 lines
2.5 KiB
JavaScript
(function () {
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"use strict";
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var typeOf = require('remedial').typeOf
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;
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function stringify(data) {
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var handlers
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, indentLevel = ''
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;
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handlers = {
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"undefined": function () {
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// objects will not have `undefined` converted to `null`
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// as this may have unintended consequences
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// For arrays, however, this behavior seems appropriate
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return 'null';
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}
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, "null": function () {
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return 'null';
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}
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, "number": function (x) {
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return x;
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}
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, "boolean": function (x) {
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return x ? 'true' : 'false';
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}
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, "string": function (x) {
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// to avoid the string "true" being confused with the
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// the literal `true`, we always wrap strings in quotes
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return JSON.stringify(x);
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}
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, "array": function (x) {
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var output = ''
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;
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indentLevel = indentLevel.replace(/$/, ' ');
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x.forEach(function (y) {
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// TODO how should `undefined` be handled?
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var handler = handlers[typeOf(y)]
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;
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if (!handler) {
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throw new Error('what the crap: ' + typeOf(y));
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}
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output += '\n' + indentLevel + '- ' + handler(y);
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});
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indentLevel = indentLevel.replace(/ /, '');
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return output;
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}
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, "object": function (x) {
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var output = ''
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;
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indentLevel = indentLevel.replace(/$/, ' ');
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Object.keys(x).forEach(function (k) {
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var val = x[k]
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, handler = handlers[typeOf(val)]
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;
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if ('undefined' === typeof val) {
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// the user should do
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// delete obj.key
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// and not
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// obj.key = undefined
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// but we'll error on the side of caution
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return;
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}
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if (!handler) {
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throw new Error('what the crap: ' + typeOf(val));
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}
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output += '\n' + indentLevel + k + ': ' + handler(val);
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});
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indentLevel = indentLevel.replace(/ /, '');
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return output;
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}
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, "function": function () {
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// TODO this should throw or otherwise be ignored
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return '[object Function]';
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}
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};
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return '---' + handlers[typeOf(data)](data) + '\n';
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}
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module.exports.stringify = stringify;
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}());
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