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This is a playground to test code. It runs a full Node.js environment and already has all of npm’s 1,000,000+ packages pre-installed, including matchs-js with all npm packages installed. Try it out:

const match = require('matchs-js').match; const sum = match({ '[]':[], '(x:xs)':(x,xs)=>x+sum(xs) }); sum([1,2,3,4,5])

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matchs-js v1.0.2

pattern match

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