Enforce Trailing Commas by Default
Problem
I propose that trailing commas should be enabled by default. IE8 is a non issue for most, and this will provide better diffing. [code block] should be formatted as: [code block] I would also suggest not enabling it for function arguments, considering that this is not in the official spec yet and won't be fully supported without a transpiler like babel. e.g.: [code block] should be formatted as: [code block]
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1 Fix
Enable Trailing Commas by Default in Prettier Configuration
Trailing commas improve version control diffs by reducing noise in changes. However, they are not enabled by default in Prettier, which can lead to inconsistent code formatting across projects. Additionally, while trailing commas are supported in most environments, their use in function arguments is not yet part of the official ECMAScript specification, leading to potential compatibility issues.
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- 1
Update Prettier Configuration
Modify the Prettier configuration file to enable trailing commas by default for objects and arrays.
javascriptmodule.exports = { trailingComma: 'es5' }; - 2
Disable Trailing Commas for Function Arguments
Ensure that the configuration does not enable trailing commas for function arguments to avoid compatibility issues with the current ECMAScript specification.
javascriptmodule.exports = { trailingComma: 'es5', arrowParens: 'avoid' }; - 3
Run Prettier on Codebase
Execute Prettier across the codebase to apply the new formatting rules, ensuring that all files are consistent with the updated configuration.
bashnpx prettier --write . - 4
Review Changes in Version Control
Check the version control system for changes made by Prettier to confirm that trailing commas are applied correctly in the specified contexts.
bashgit diff
Validation
Verify that all objects and arrays in the codebase now include trailing commas where appropriate, while function arguments remain without trailing commas. Review the output of 'git diff' to ensure the changes reflect the new formatting rules.
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Environment
Submitted by
Alex Chen
2450 rep