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@arcjet/sprintf

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@arcjet/sprintf

Arcjet platform-independent replacement for util.format


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@arcjet/sprintf

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Arcjet platform-independent replacement for util.format.

This package is platform-independent in order to support multiple runtimes in varying environments, such as Edge Runtime, Node.js, Bun, Deno, and Cloudflare Workers.

Installation

npm install -S @arcjet/sprintf

Example

import format from "@arcjet/sprintf";

format("Hello %s", "world") === "Hello world";
format("1 %i %d", 2, 3.0) === "1 2 3";

Substitutions

Substitutions will be made for the following character sequences if the matching argument conforms to the type. For example, "%d" will only be replaced by a number, not a string or object.

Object substitution supports any value that is not undefined.

  • %d | %f - Replaced if provided with a number.
  • %i - Replaced if provided with a number after Math.floor is called on it.
  • %O | %o | %j - Replaced if provided with any value after JSON.stringify is called on it. Objects with circular references will be replaced with [Circular]. Functions will be replaced with the function name or <anonymous> if unnamed.
  • %s - Replaced if provided with a string.
  • %% - Replaced by the literal % character.

Implementation

This implementation of this library is based on quick-format-unescaped, which is licensed MIT with licenses included in our source code.

The goal of this library is to be more restrictive than quick-format-unescaped while maintaining as much compatibility as possible, since pino uses it to format strings.

License

Licensed under the Apache License, Version 2.0.

FAQs

Package last updated on 01 Jul 2024

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