init component

node_modules/fp-ts/lib/Magma.d.ts

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+/**
+ * A `Magma` is a pair `(A, concat)` in which `A` is a non-empty set and `concat` is a binary operation on `A`
+ *
+ * See [Semigroup](https://gcanti.github.io/fp-ts/modules/Semigroup.ts.html) for some instances.
+ *
+ * @since 2.0.0
+ */
+import { Endomorphism } from './Endomorphism'
+import { Predicate } from './Predicate'
+/**
+ * @category model
+ * @since 2.0.0
+ */
+export interface Magma<A> {
+  readonly concat: (x: A, y: A) => A
+}
+/**
+ * The dual of a `Magma`, obtained by swapping the arguments of `concat`.
+ *
+ * @example
+ * import { reverse, concatAll } from 'fp-ts/Magma'
+ * import * as N from 'fp-ts/number'
+ *
+ * const subAll = concatAll(reverse(N.MagmaSub))(0)
+ *
+ * assert.deepStrictEqual(subAll([1, 2, 3]), 2)
+ *
+ * @since 2.11.0
+ */
+export declare const reverse: <A>(M: Magma<A>) => Magma<A>
+/**
+ * @since 2.11.0
+ */
+export declare const filterFirst: <A>(predicate: Predicate<A>) => (M: Magma<A>) => Magma<A>
+/**
+ * @since 2.11.0
+ */
+export declare const filterSecond: <A>(predicate: Predicate<A>) => (M: Magma<A>) => Magma<A>
+/**
+ * @since 2.11.0
+ */
+export declare const endo: <A>(f: Endomorphism<A>) => (M: Magma<A>) => Magma<A>
+/**
+ * Given a sequence of `as`, concat them and return the total.
+ *
+ * If `as` is empty, return the provided `startWith` value.
+ *
+ * @example
+ * import { concatAll } from 'fp-ts/Magma'
+ * import * as N from 'fp-ts/number'
+ *
+ * const subAll = concatAll(N.MagmaSub)(0)
+ *
+ * assert.deepStrictEqual(subAll([1, 2, 3]), -6)
+ *
+ * @since 2.11.0
+ */
+export declare const concatAll: <A>(M: Magma<A>) => (startWith: A) => (as: ReadonlyArray<A>) => A