15 lines
411 B
JavaScript
15 lines
411 B
JavaScript
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import {BooleanT} from './BooleanT.js'
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import {onType} from '#core/helpers.js'
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import {Returns, Type, TypeOfTypes, Undefined} from '#core/Type.js'
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import {NumberT} from '#number/NumberT.js'
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const bool = f => Returns(BooleanT, f)
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export const boolean = onType(
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BooleanT, bool(p => p),
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NumberT, bool(a => !!a),
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TypeOfTypes, bool(() => true),
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Undefined, bool(() => false),
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[], bool(() => false)
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)
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