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study-overview

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a high-level summary of study accrual and data cleaning metrics

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function defaultIsMergeableObject(value) { return isNonNullObject(value) && !isSpecial(value); } function isNonNullObject(value) { return !!value && typeof value === 'object'; } function isSpecial(value) { var stringValue = Object.prototype.toString.call(value); return stringValue === '[object RegExp]' || stringValue === '[object Date]'; } function emptyTarget(val) { return Array.isArray(val) ? [] : {}; } function cloneUnlessOtherwiseSpecified(value, options) { return options.clone !== false && options.isMergeableObject(value) ? merge(emptyTarget(value), value, options) : value; } function defaultArrayMerge(target, source, options) { return target.concat(source).map(function(element) { return cloneUnlessOtherwiseSpecified(element, options); }); } function getMergeFunction(key, options) { if (!options.customMerge) { return merge; } var customMerge = options.customMerge(key); return typeof customMerge === 'function' ? customMerge : merge; } function getEnumerableOwnPropertySymbols(target) { return Object.getOwnPropertySymbols ? Object.getOwnPropertySymbols(target).filter(function(symbol) { return target.propertyIsEnumerable(symbol); }) : []; } function getKeys(target) { return Object.keys(target).concat(getEnumerableOwnPropertySymbols(target)); } function mergeObject(target, source, options) { var destination = {}; if (options.isMergeableObject(target)) { getKeys(target).forEach(function(key) { destination[key] = cloneUnlessOtherwiseSpecified(target[key], options); }); } getKeys(source).forEach(function(key) { if (!options.isMergeableObject(source[key]) || !target[key]) { destination[key] = cloneUnlessOtherwiseSpecified(source[key], options); } else { destination[key] = getMergeFunction(key, options)(target[key], source[key], options); } }); return destination; } function merge(target, source, options) { options = options || {}; options.arrayMerge = options.arrayMerge || defaultArrayMerge; options.isMergeableObject = options.isMergeableObject || defaultIsMergeableObject; var sourceIsArray = Array.isArray(source); var targetIsArray = Array.isArray(target); var sourceAndTargetTypesMatch = sourceIsArray === targetIsArray; if (!sourceAndTargetTypesMatch) { return cloneUnlessOtherwiseSpecified(source, options); } else if (sourceIsArray) { return options.arrayMerge(target, source, options); } else { return mergeObject(target, source, options); } } merge.all = function mergeAll(array, options) { if (!Array.isArray(array)) { throw new Error('first argument should be an array'); } return array.reduce(function(prev, next) { return merge(prev, next, options); }, {}); }; export default merge;