43 lines
1.4 KiB
JavaScript
43 lines
1.4 KiB
JavaScript
class ObjectCopy {
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static addNew(existing, target){
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// clone target
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var out = JSON.parse(JSON.stringify(target));
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if(! existing) {
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if(Debug.debug) {
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console.log("[ObjectCopy::addNew] There's no existing value. Returning target value.");
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}
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return out;
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}
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for(var k in out) {
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// if current key exist, replace it with existing value. Take no action otherwise.
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if(existing[k]) {
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// Types and constructors of objects must match. If they don't, we always use the new value.
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if(typeof out[k] === typeof existing[k] && out[k].constructor === existing[k].constructor) {
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// objects are special, we need to check them recursively.
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if(out[k] && typeof out[k] === 'object' && out[k].constructor === Object ) {
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if(Debug.debug && Debug.settings) {
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console.log("[ObjectCopy::addNew] current key contains an object. Recursing!")
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}
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out[k] = this.addNew(existing[k], out[k]);
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} else {
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out[k] = existing[k];
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}
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}
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}
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}
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}
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static pruneUnused(existing, target, ignoreKeys) {
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// TODO: implement at some other date
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// existing: object that we have.
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// target: object that we want
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// ignoreKeys: if key is an object, we don't recursively call this function on that key
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}
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} |