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fix to only merge in history when possible

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Ian Storm Taylor 2017-10-31 22:43:48 -07:00
parent fe640f7afb
commit 485bfb6aa4
1 changed files with 1 additions and 1 deletions
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packages/slate/src/models/history.js
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@ -130,7 +130,7 @@ class History extends Record(DEFAULTS) {
debug('save', { operation, merge })
// If the `merge` flag is true, add the operation to the previous batch.
if (merge) {
if (merge && prevBatch) {
const batch = prevBatch.slice()
batch.push(operation)
undos = undos.pop()