Splits strings into an array of keys used for reading nested data structures
npm install split-keypathsplit-keypath is a method that takes a string as an input and generates an array of keys that can be used for reading values from a deeply nested object. The algorithm supports extracting array keys, which is how you can specify arbitrary keys. Please see below for examples.
``
$ npm install split-keypath
> The npm package has a bundle for the browser
` javascript`
import splitKeypath from "split-keypath";
var result = splitKeypath("hello.world");
// Result is ["hello", "world"]
` javascript`
import splitKeypath from "split-keypath";
var result = splitKeypath("hello[0].world[some really long string. with non ascii chars.]");
// Result is ["hello", "0", "world", "some really long string. with non ascii chars."];
Practical use that reads a value from a somewhat deeply nested object hierarchy
` javascript
import splitKeypath from "split-keypath";
function readDeepValue(input, keypath) {
return splitKeypath(keypath).reduce((nested, key) => nested[key], input);
}
var input = {
some: {
deep: [
{
key: 42
}
]
}
};
var result = readDeepValue(input, "some.deep[0].key");
// Result is 42
``