Thanks to this Stack Overflow answer I learned about the JavaScript Proxy object:
let handler = { get: function(target, name) { let keys = Object.keys(target).filter(key => key.startsWith(name)).sort(); if(keys.length > 0) { return target[keys[0]]; } } } const partialKeys = obj => new Proxy(obj, handler); let d = {'world':'hello'}; let pd = partialKeys(d); console.log(pd.w);
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Thanks to this Stack Overflow answer I learned about the JavaScript Proxy object: