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Original file line number | Diff line number | Diff line change |
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/** | ||
* Enables a comparison of arbitrary values with support for undefined/null. | ||
* Requires the `<` and `>` operators to return something reasonable for the provided values. | ||
*/ | ||
export function compare<T>(x?: T, y?: T) { | ||
if (x == undefined && y == undefined) { | ||
return 0; | ||
} else if (x == undefined) { | ||
return -1; | ||
} else if (y == undefined) { | ||
return 1; | ||
} else if (x < y) { | ||
return -1; | ||
} else if (x > y) { | ||
return 1; | ||
} else { | ||
return 0; | ||
} | ||
} |
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