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    Function map

    • P.map(keyPattern, valuePattern) takes a subpattern to match against the key, a subpattern to match against the value and returns a pattern that matches on maps where all elements inside the map match those two subpatterns.

      Read P.map documentation on GitHub

      Type Parameters

      • input

      Returns Chainable<MapP<input, unknown, unknown>>

      match(value)
        .with({ users: P.map(P.map(P.string, P.number)) }, (map) => `map's type is Map<string, number>`)

    • P.map(keyPattern, valuePattern) takes a subpattern to match against the key, a subpattern to match against the value and returns a pattern that matches on maps where all elements inside the map match those two subpatterns.

      Read P.map documentation on GitHub

      Type Parameters

      • input
      • const pkey extends
            | readonly []
            | readonly [unknown, unknown]
            | readonly [unknown, unknown]
            | UnknownProperties
            | Primitives
            | UnknownMatcher
            | readonly UnknownPattern[]
            | readonly [UnknownPattern, UnknownPattern]
            | readonly [UnknownPattern, UnknownPattern]
            | PatternMatcher<WithDefault<UnwrapMapKey<input>, unknown>>
            | {
                readonly [k in string | number | symbol]?: Pattern.Pattern<
                    Readonly<
                        MergeUnion<
                            Exclude<
                                WithDefault<UnwrapMapKey<input>, unknown>,
                                (readonly any[] | Primitives | Map<any, any> | Set<any>),
                            >,
                        >,
                    >[k],
                >
            }
      • const pvalue extends
            | readonly []
            | readonly [unknown, unknown]
            | readonly [unknown, unknown]
            | UnknownProperties
            | Primitives
            | UnknownMatcher
            | readonly UnknownPattern[]
            | readonly [UnknownPattern, UnknownPattern]
            | readonly [UnknownPattern, UnknownPattern]
            | PatternMatcher<WithDefault<UnwrapMapValue<input>, unknown>>
            | {
                readonly [k in string | number | symbol]?: Pattern.Pattern<
                    Readonly<
                        MergeUnion<
                            Exclude<
                                WithDefault<UnwrapMapValue<input>, unknown>,
                                (readonly any[] | Primitives | Map<any, any> | Set<any>),
                            >,
                        >,
                    >[k],
                >
            }

      Parameters

      Returns Chainable<MapP<input, pkey, pvalue>>

      match(value)
        .with({ users: P.map(P.map(P.string, P.number)) }, (map) => `map's type is Map<string, number>`)

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