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function migrateObject(obj) { | |
const clipPath = obj?.clipPath; | |
if (clipPath && clipPath.type === 'group' && clipPath.eraser === true) { | |
clipPath.type = 'eraser'; | |
delete clipPath.eraser; | |
const rect = clipPath.objects.shift(); | |
obj.clipPath = rect.clipPath; | |
obj.eraser = clipPath; | |
} | |
} | |
function traverseTree(target) { | |
target.objects?.forEach(obj => { | |
migrateObject(obj); | |
migrateObject(obj.clipPath); | |
traverseTree(obj); | |
}); | |
} | |
/** | |
* call this method | |
* @param {Object} canvasJSON | |
* @returns {Object} version 2 compatible json | |
*/ | |
function migrate(canvasJSON) { | |
traverseTree(canvasJSON); | |
['backgroundImage', 'overlayImage'].forEach(key => { | |
if (canvasJSON[key]) { | |
migrateObject(canvasJSON[key]); | |
traverseTree(canvasJSON[key]); | |
} | |
}); | |
return canvasJSON; | |
} |
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Call
migrate
with the json payload.It returns a migrated payload.
It's safe to run on v2 payload if you're not sure if your payload is up to date or not.