How to use 'p-retry' in JavaScript

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function retry (n) {
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    if (n <= 0) {
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        reject('Invocation failed. No retries left.');
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    } else {
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        wsk.actions
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        .invoke({
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                actionName: actionName,
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                params: args,
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                blocking: true
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            })
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        .then(activation => resolve(activation.response.result) )
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        .catch(error => {
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                console.log(`attempt ${n} failed, retrying`);
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                retry(n - 1);
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            });
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    }
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}

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export function retry(func, retryCount = 5) {
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  return new Promise((resolve, reject) => {
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    func().then(
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      (...args) => {
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        resolve(...args);
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      },
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      () => {
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        if (retryCount === 0) {
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          return reject();
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        }
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        return setTimeout(() => retry(func, retryCount - 1).then(resolve, reject), 50);
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      },
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    );
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  });
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}