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json-compare-engine
Advanced tools
npm install compare-engine
yarn add compare-engine
npm test
yarn test
Compares 2 json, considering array object movement :
import {CompareEngine} from 'compare-engine';
const jsonLeft = {
objectArray: [
{
id: "movedIndex",
property: "old property",
otherObjectArray: [
{id: "1"},
{id: "2"},
],
otherArray: [
0, 1, 2
]
},
{
id: "removedObject",
},
{
id: "equal"
}
]
};
const jsonright = {
objectArray: [
{
id: "newObject",
},
{
id: "movedIndex",
property: "updated property",
otherObjectArray: [
{id: "2"},
{id: "1"},
],
otherArray: [
2, 1, 3
]
},
{
id: "equal"
}
]
};
const compareEngine = new CompareEngine((paths: string[]) => {
return "id";
});
compareEngine.updateLeft(jsonLeft);
compareEngine.updateRight(jsonRight);
compareEngine.updateCompareIndex();
compareEngine.getLeftState("") // return UPDATED CompareState
compareEngine.getLeftState("objectArray") // return UPDATED CompareState
compareEngine.getLeftState("objectArray/0") // return UPDATED CompareState
compareEngine.getLeftState("objectArray/0/id") // return EQUAL CompareState
compareEngine.getLeftState("objectArray/0/property") // return UPDATED CompareState
compareEngine.getLeftState("objectArray/0/otherObjectArray") // return UPDATED CompareState
compareEngine.getLeftState("objectArray/0/otherObjectArray/0") // return UPDATED CompareState
compareEngine.getLeftState("objectArray/0/otherObjectArray/0/id") // return EQUAL CompareState
compareEngine.getLeftState("objectArray/0/otherObjectArray/1") // return UPDATED CompareState
compareEngine.getLeftState("objectArray/0/otherObjectArray/1/id") // return EQUAL CompareState
compareEngine.getLeftState("objectArray/0/otherArray") // return UPDATED CompareState
compareEngine.getLeftState("objectArray/0/otherArray/0") // return REMOVED CompareState
compareEngine.getLeftState("objectArray/0/otherArray/1") // return EQUAL CompareState
compareEngine.getLeftState("objectArray/0/otherArray/2") // return UPDATED CompareState
compareEngine.getLeftState("objectArray/1") // return REMOVED CompareState
compareEngine.getLeftState("objectArray/1/id") // return NONE CompareState
compareEngine.getLeftState("objectArray/2") // return EQUAL CompareState
compareEngine.getLeftState("objectArray/2/id") // return NONE CompareState
compareEngine.getLeftState("") // return UPDATED CompareState
compareEngine.getLeftState("objectArray") // return UPDATED CompareState
compareEngine.getLeftState("objectArray/0") // return ADDED CompareState
compareEngine.getLeftState("objectArray/0/id") // return NONE CompareState
compareEngine.getLeftState("objectArray/1") // return UPDATED CompareState
compareEngine.getLeftState("objectArray/1/id") // return EQUAL CompareState
compareEngine.getLeftState("objectArray/1/property") // return UPDATED CompareState
compareEngine.getLeftState("objectArray/1/otherObjectArray") // return UPDATED CompareState
compareEngine.getLeftState("objectArray/1/otherObjectArray/0") // return UPDATED CompareState
compareEngine.getLeftState("objectArray/1/otherObjectArray/0/id") // return EQUAL CompareState
compareEngine.getLeftState("objectArray/1/otherObjectArray/1") // return UPDATED CompareState
compareEngine.getLeftState("objectArray/1/otherObjectArray/1/id") // return EQUAL CompareState
compareEngine.getLeftState("objectArray/1/otherArray") // return UPDATED CompareState
compareEngine.getLeftState("objectArray/1/otherArray/0") // return UPDATED CompareState
compareEngine.getLeftState("objectArray/1/otherArray/1") // return EQUAL CompareState
compareEngine.getLeftState("objectArray/1/otherArray/2") // return ADDED CompareState
compareEngine.getLeftState("objectArray/2") // return EQUAL CompareState
compareEngine.getLeftState("objectArray/2/id") // return NONE CompareState
class CompareEngine {
constructor(protected determineArrayIndexFn?: (paths: string[]) => string)
updateLeft(json: any): void
updateRight(json: any): void
updateCompareIndex(): void
hasChange(): boolean
getLeftState(paths: string[] | string): CompareState
getRightState(paths: string[] | string): CompareState
}
class CompareState {
value: CompareStateEnum
isNone(): boolean
isAdded(): boolean
isUpdated(): boolean
isRemoved(): boolean
isEqual(): boolean
isChanged(): boolean
toString(): string
}
enum CompareStateEnum {
NONE = "",
ADDED = "added",
UPDATED = "updated",
REMOVED = "removed",
EQUAL = "equal",
}
abstract class CompareUtils {
static isNumber(num: JsonPrimitive): num is number
static isArray<T>(arr: unknown): arr is T[]
static isString(str: unknown): obj is string
static isObject(obj: unknown): obj is JsonObject
static isEqual(sideValue: unknown, otherSideValue: unknown): boolean
static deepClone<T, I>(source: T): T
}
FAQs
Json comparison engine
The npm package json-compare-engine receives a total of 0 weekly downloads. As such, json-compare-engine popularity was classified as not popular.
We found that json-compare-engine demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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