deepRequired.js
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deepRequired.js
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			'use strict';

			module.exports = function defFunc(ajv) {
			defFunc.definition = {
			type: 'object',
			inline: function (it, keyword, schema) {
			var expr = '';
			for (var i=0; i<schema.length; i++) {
			if (i) expr += ' && ';
			expr += '(' + getData(schema[i], it.dataLevel) + ' !== undefined)';
			}
			return expr;
			},
			metaSchema: {
			type: 'array',
			items: {
			type: 'string',
			format: 'json-pointer'
			}
			}
			};

			ajv.addKeyword('deepRequired', defFunc.definition);
			return ajv;
			};


			function getData(jsonPointer, lvl) {
			var data = 'data' + (lvl \|\| '');
			if (!jsonPointer) return data;

			var expr = data;
			var segments = jsonPointer.split('/');
			for (var i=1; i<segments.length; i++) {
			var segment = segments[i];
			data += getProperty(unescapeJsonPointer(segment));
			expr += ' && ' + data;
			}
			return expr;
			}


			var IDENTIFIER = /^[a-z$_][a-z$_0-9]*$/i;
			var INTEGER = /^[0-9]+$/;
			var SINGLE_QUOTE = /'\|\\/g;
			function getProperty(key) {
			return INTEGER.test(key)
			? '[' + key + ']'
			: IDENTIFIER.test(key)
			? '.' + key
			: "['" + key.replace(SINGLE_QUOTE, '\\$&') + "']";
			}


			function unescapeJsonPointer(str) {
			return str.replace(/~1/g, '/').replace(/~0/g, '~');
			}