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Last active October 14, 2023 12:42
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K extends keyof T in TS
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k_extends_keyof_t_in_ts
# Typescriptにおける`K extends keyof T`の考え方
`keyof T`は`T`に含まれるキー名のリテラル型のUnionnいなる。
なので、そのUnionに含まれる各リテラル型の値は`extends keyof T`を満たす
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