Why .editorconfig Still Matters Even with Prettier Around

.editorconfig file is used to set code format and file style rules to ensure consistency of code style between different developers and editors. The .editorconfig file mainly configures properties such as indent style, indent size, newline character, character encoding, trailing spaces and final newline character.

The configuration options available in the .editorconfig file are listed below along with their details.

Detailed explanation of .editorconfig file

root

Specify whether the current .editorconfig file is the root configuration of the project. If set to true, the editor will stop searching for .editorconfig files in the parent directory. This is useful when there are multiple .editorconfig files in the project to ensure that the current file serves as the final configuration.

<code>root = true</code>

[pattern] - file matching pattern

Define the file types to which the rule applies. Supports wildcards such as * (matches any character), ? (matches a single character), and {} (matches multiple file types). For example, <code>[*.js]</code> matches all JavaScript files, and [*.{html,css}] matches both HTML and CSS files.

<code>[*.js]</code>

indent_style

Define the indentation style as space or tab. This ensures consistency in indentation style between different editors, improving code readability.

<code>indent_style = space</code>

indent_size

Specifies the size of the indentation, usually a positive integer. If set to tab, the indent size depends on tab_width. Common values ​​are 2 or 4 spaces.

<code>indent_size = 4</code>

tab_width

Defines the display width of tab characters, which affects the visual appearance of tab-based indentation. It is often used with indent_size to ensure consistent display of indentation.

<code>tab_width = 4</code>

end_of_line

Specifies the format of newline characters. lf represents the line feed character (n), crlf represents the carriage return and line feed character (rn), and cr represents the carriage return character (r) (rarely used). Uniform newlines help prevent version control conflicts in cross-platform development.

<code>end_of_line = lf</code>

charset

Define the character encoding of the file. Common options include utf-8, utf-16, and latin1. UTF-8 is recommended because it supports multiple languages ​​and has good cross-platform compatibility.

<code>charset = utf-8</code>

trim_trailing_whitespace

Determine whether to automatically remove unnecessary spaces at the end of lines. This helps maintain clean code and prevents irrelevant changes from appearing in version control.

<code>trim_trailing_whitespace = true</code>

insert_final_newline

Specifies whether to add a newline character at the end of the file. Many compilers and toolchains require a final newline character, which is a good coding practice.

<code>insert_final_newline = true</code>

max_line_length

Set the maximum length of each line to ensure code readability in narrower viewports. If set to off, line length limits are not enforced.

<code>max_line_length = 80</code>

unset

Cancel previously set properties and restore them to their default values. This can be used to override global settings for specific file types.

<code>root = true</code>

.editorConfig file example

This is a complete example, showing a specific configuration of different file types:

<code>[*.js]</code>

This example. EditorConfig file demonstrates how to set the consistent encoding style and format for different file types to ensure that team members using various editors maintain a unified code style.

. EditorConfig complement Prettier?

1. Basic file format rules (non -code file)

. EditorConfig is suitable for all file types (for example, configuration files, Markdown, Makefile), which provides basic rules for indentation, character coding and changing lines. Prettier focuses on code files.

Character encoding and changing character management
. EditorConfig can standardize character encoding and replacement symbol patterns (for example, LF or CRLF), while prettier does not manage these.

Cross -editor compatibility

3. Most editors and IDE support. EditorConfig. Even if the prettier is not enabled, the editor can maintain a consistent file format.

​​The support of non -programming files

4. . EditorConfig provides the basic format rules for non -programming files, which makes up for the shortcomings of Prettier that do not support pure text files.
Why use .editorConfig and Prettier at the same time?

.editorConfig and Prettier served different purposes and added each other to meet different needs.

. EditorConfig:

• Follow basic file rules such as shrinking style, character coding, and follow -up space, which is suitable for all file types. Even if Prettier is not used, these rules can ensure the consistency between various editors.
Prettier:

It is used for automatic code formatting and handling more advanced aspects, such as the placement of the empty line, the bracket style, and the other specific language format.
• The combination of the two can ensure the consistency of the basic file format and code style.
In cross -platform development, different operating systems (e.g., Windows, Macos, Linux) use different default lines. .editorConfig provided a simple method to standardize the change symbols of all files in the project to avoid conflicts caused by system differences.

For certain file types (for example, configuration files or documents), EditorConfig allows the use of specific rules for more fine -grained control, which is very practical for certain projects. In addition, not all items use Prettier, especially the relics or projects that do not require automatic formatting. . EditorConfig is a universal configuration method supported by almost all mainstream editors and IDEs. Even if there is no Prettier, it is very valuable to teamwork.

Conclusion

. EditorConfig provides file -level control to the basic format rules of all file types, and Prettier focuses on automatic code style. Based on the use of these two tools to ensure the comprehensive consistency of the file style and code format.

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