UpdateFile

A component for updating existing files or initializing new files.

This component allows you to read the current contents of a file and generate new content based on those contents. If the file doesn’t exist, it can use default content from either a file path or inline content.

Props for the UpdateFile component.

jsx

import { UpdateFile } from "@alloy-js/core";

<UpdateFile
  defaultContent={Children}
  defaultContentPath="string"
  path="string"
>
  {children}
</UpdateFile>

stc

import { UpdateFile } from "@alloy-js/core/stc";

UpdateFile({
  defaultContent: Children,
  defaultContentPath: string,
  path: string,
}).children(children)

Props

children	(currentContents: string | null) => Children	Function that receives the current file contents and returns the new content
defaultContent	optional Children	Optional default content to use when the target file doesn’t exist
defaultContentPath	optional string	Optional path to a file containing default content to use when the target file doesn’t exist
path	string	The relative path to the file to update or create

Example

<UpdateFile path="config.json" defaultContent="{}">
  {(currentContents) => {
    const config = currentContents ? JSON.parse(currentContents) : {};
    config.newProperty = "value";
    return JSON.stringify(config, null, 2);
  }}
</UpdateFile>