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fix(cli): use unique temp dir per invocation
Fixes #183
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,19 @@ | ||
/** | ||
* Cheaply generate a UUID with a low chance of collisions | ||
* https://stackoverflow.com/a/8809472/745158 | ||
*/ | ||
export function uuid(): string { | ||
let epoch: number = new Date().getTime(); | ||
let sessionLength: number = Date.now() * 1000 || 0; | ||
return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, (character) => { | ||
let randomNumber: number = Math.random() * 16; | ||
if (epoch > 0) { | ||
randomNumber = (epoch + randomNumber) % 16 | 0; | ||
epoch = Math.floor(epoch / 16); | ||
} else { | ||
randomNumber = (sessionLength + randomNumber) % 16 | 0; | ||
sessionLength = Math.floor(sessionLength / 16); | ||
} | ||
return (character == 'x' ? randomNumber : (randomNumber & 0x7) | 0x8).toString(16); | ||
}); | ||
} |