44 lines
1.1 KiB
TypeScript
44 lines
1.1 KiB
TypeScript
import { useTypes } from 'over.ts/src/index.js';
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const types = {
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number: (x: unknown): x is number => typeof x === 'number',
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bigint: (x: unknown): x is bigint => typeof x === 'bigint'
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}
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const overload = useTypes(types)
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const negate = overload({
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'number -> number': (a: number): number => {
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console.log('Negating number', a)
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return -a
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},
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'bigint -> bigint': (a: bigint): bigint => {
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console.log('Negating bigint', a)
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return -a
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}
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})
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console.log('Negation of 5 is', negate(5))
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console.log('Negation of 5n is', negate(5n))
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const add = overload({
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'number, number -> number': (a: number, b: number): number => {
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console.log('Adding numbers', a, b)
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return a+b
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},
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'bigint, bigint -> bigint': (a: bigint, b: bigint): bigint => {
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console.log('Adding bigints', a, b)
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return a+b
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}
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})
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console.log('Sum of 5 and 7 is', add(5,7))
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console.log('Sum of 5n and 7n is', add(5n, 7n))
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try {
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//@ts-expect-error
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console.log('Mixed sum is', add(5n, 7))
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} catch {
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console.log('Mixed sum errored as expected.')
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}
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