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Diffstat (limited to 'src/client/react/lib/withinRange.js')
-rw-r--r-- | src/client/react/lib/withinRange.js | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/client/react/lib/withinRange.js b/src/client/react/lib/withinRange.js new file mode 100644 index 0000000..d3d4f24 --- /dev/null +++ b/src/client/react/lib/withinRange.js @@ -0,0 +1,11 @@ +export default function withinRange(number, rangeMax) { + if (number < 0) { + return withinRange(number + (rangeMax + 1), rangeMax); + } + + if (number > rangeMax) { + return withinRange(number - (rangeMax + 1), rangeMax); + } + + return number; +} |