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Original file line number | Diff line number | Diff line change |
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/** 入力がnullかundefinedの場合エラーを投げ、それ以外の場合は入力をそのまま返す */ | ||
export const ensureNotNullish = <T>( | ||
value: T | null | undefined, | ||
message = "Unexpected nullish value", | ||
): T => { | ||
if (value == null) { | ||
throw new Error(message); | ||
} | ||
return value; | ||
}; | ||
|
||
/** エラーからエラー文を作る */ | ||
export const errorToMessage = (e: unknown): string => { | ||
if (e instanceof Error) { | ||
return `${e.toString()}: ${e.message}`; | ||
} else if (typeof e === "string") { | ||
return `String Error: ${e}`; | ||
} else if (typeof e === "object" && e != undefined) { | ||
return `Object Error: ${JSON.stringify(e).slice(0, 100)}`; | ||
} else { | ||
return `Unknown Error: ${String(e)}`; | ||
} | ||
}; |
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