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metamask-extension/shared/modules/object.utils.js

23 lines
803 B
JavaScript

/**
* Return a "masked" copy of the given object.
*
* The returned object includes only the properties present in the mask. The
* mask is an object that mirrors the structure of the given object, except
* the only values are `true` or a sub-mask. `true` implies the property
* should be included, and a sub-mask implies the property should be further
* masked according to that sub-mask.
*
* @param {object} object - The object to mask
* @param {Object<object | boolean>} mask - The mask to apply to the object
*/
export function maskObject(object, mask) {
return Object.keys(object).reduce((state, key) => {
if (mask[key] === true) {
state[key] = object[key];
} else if (mask[key]) {
state[key] = maskObject(object[key], mask[key]);
}
return state;
}, {});
}