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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 | 1x 993x 993x 1x 1x 1346x 1346x 1x 2x 2x 2x 2x 2x 1x 318x 318x 318x 823x 318x 675x 521x 154x 318x 1x 320x 320x 320x 320x 2x 318x | const isMergeableObject = (val) => {
const nonNullObject = val && typeof val === 'object';
return (
nonNullObject &&
Object.prototype.toString.call(val) !== '[object RegExp]' &&
Object.prototype.toString.call(val) !== '[object Date]'
);
};
const emptyTarget = (val) => {
const isEmpty = Array.isArray(val) ? [] : {};
return isEmpty;
};
const cloneIfNecessary = (value, optionsArgument) => {
const clone = optionsArgument && optionsArgument.clone === true;
return clone && isMergeableObject(value)
? deepMerge(emptyTarget(value), value, optionsArgument)
: value;
};
const defaultArrayMerge = (target, source, optionsArgument) => {
const destination = target.slice();
source.forEach(function (e, i) {
if (typeof destination[i] === 'undefined') {
destination[i] = cloneIfNecessary(e, optionsArgument);
} else Eif (isMergeableObject(e)) {
destination[i] = deepMerge(target[i], e, optionsArgument);
} else if (target.indexOf(e) === -1) {
// IMPORTANT: WE SHOULD NOT PUSH NEW ELEMENTS TO THE ARRAY
// INSTEAD WE SHOULD REPLACE THE ELEMENT, this will result
// in unexpected behaviors if the initial tool parameters
// are desired to override the default tool parameters that are
// arrays
destination[i] = cloneIfNecessary(e, optionsArgument);
}
});
return destination;
};
const mergeObject = (target, source, optionsArgument) => {
const destination = {};
Eif (isMergeableObject(target)) {
Object.keys(target).forEach(function (key) {
destination[key] = cloneIfNecessary(target[key], optionsArgument);
});
}
Object.keys(source).forEach(function (key) {
if (!isMergeableObject(source[key]) || !target[key]) {
destination[key] = cloneIfNecessary(source[key], optionsArgument);
} else {
destination[key] = deepMerge(target[key], source[key], optionsArgument);
}
});
return destination;
};
/**
* Merge two objects, recursively merging any objects that are arrays
* @param target - The target object.
* @param source - The source object to merge into the target object.
* @param optionsArgument - The options object.
* @returns The merged object.
*/
const deepMerge = (target = {}, source = {}, optionsArgument = undefined) => {
const array = Array.isArray(source);
const options = optionsArgument || { arrayMerge: defaultArrayMerge };
const arrayMerge = options.arrayMerge || defaultArrayMerge;
if (array) {
return Array.isArray(target)
? arrayMerge(target, source, optionsArgument)
: cloneIfNecessary(source, optionsArgument);
}
return mergeObject(target, source, optionsArgument);
};
export default deepMerge;
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