Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 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 | 35x 31x 20x 52x 69x 141x 71x 52x 20x 26x 26x 26x 26x 26x | import isArray from 'lodash/isArray'
import isEqual from 'lodash/isEqual'
import isNil from 'lodash/isNil'
import isObject from 'lodash/isObject'
import merge from './merge'
import transform from 'lodash/transform'
/**
* replace all values in an object with `null`. used to generate the ORSet for
* diffing operations.
*
* @param {Object} object
* @return {Object}
*/
const nullify = (object) => transform(object, (result, value, key) => {
result[key] = (isObject(value) && !isArray(value))
? nullify(value)
: null
})
/**
* @param {object} base
* @param {object} object
* @return {object}
*/
const difference = (base, object) => {
const changes = (object, base) => {
return transform(object, (result, value, key) => {
if (!isEqual(value, base[key])) {
result[key] = (isObject(value) && isObject(base[key]) && !isArray(value))
? changes(value, base[key])
: value
}
})
}
return (isNil(base))
? object
: changes(object, base)
}
const observedRemoveDiff = (base, object) => {
const diff = difference(base, object)
const inverseDiff = difference(object, base)
const nullDiff = nullify(inverseDiff)
const orDiff = merge({}, nullDiff, diff)
return orDiff
}
export default observedRemoveDiff
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