| 1 |
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| 2 |
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| 3 | function areInputsEqual (newInputs, lastInputs) {
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| 4 | if (newInputs.length !== lastInputs.length) {
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| 5 | return false
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| 6 | }
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| 7 | for (let i = 0; i < newInputs.length; i++) {
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| 8 | if (newInputs[i] !== lastInputs[i]) {
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| 9 | return false
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| 10 | }
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| 11 | }
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| 12 | return true
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| 13 | }
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| 14 |
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| 15 | export function memoizeOne (resultFn, isEqual) {
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| 16 |
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| 17 | if (isEqual === void 0) { isEqual = areInputsEqual }
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| 18 | let lastThis
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| 19 | let lastArgs = []
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| 20 | let lastResult
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| 21 | let calledOnce = false
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| 22 | function memoized () {
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| 23 | const newArgs = []
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| 24 | for (let _i = 0; _i < arguments.length; _i++) {
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| 25 | newArgs[_i] = arguments[_i]
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| 26 | }
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| 27 | if (calledOnce && lastThis === this && isEqual(newArgs, lastArgs)) {
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| 28 | return lastResult
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| 29 | }
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| 30 | lastResult = resultFn.apply(this, newArgs)
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| 31 | calledOnce = true
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| 32 | lastThis = this
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| 33 | lastArgs = newArgs
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| 34 | return lastResult
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| 35 | }
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| 36 | return memoized
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| 37 | }
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