`util.styleText()` does not accept format aliases on Node.js >= 25.7.0

[bidord]

Version

v25.7.0 - v25.8.0

Platform

Linux 12dcdbb287ef 6.6.87.2-microsoft-standard-WSL2 #1 SMP PREEMPT_DYNAMIC Thu Jun  5 18:30:46 UTC 2025 x86_64 GNU/Linux

Subsystem

util

What steps will reproduce the bug?

util.styleText("grey", "foo")

Node.js v25.6.1 ✅

$ docker run --rm -it node:25.6.1 -p 'util.styleText("grey", "foo")'
foo

Node.js v25.7.0 ❌

$ docker run --rm -it node:25.7.0 -p 'util.styleText("grey", "foo")'
node:internal/errors:546
      throw error;
      ^

TypeError [ERR_INVALID_ARG_VALUE]: The argument 'format' must be one of: 'reset', 'bold', 'dim', 'italic', 'underline', 'blink', 'inverse', 'hidden', 'strikethrough', 'doubleunderline', 'black', 'red', 'green', 'yellow', 'blue', 'magenta', 'cyan', 'white', 'bgBlack', 'bgRed', 'bgGreen', 'bgYellow', 'bgBlue', 'bgMagenta', 'bgCyan', 'bgWhite', 'framed', 'overlined', 'gray', 'redBright', 'greenBright', 'yellowBright', 'blueBright', 'magentaBright', 'cyanBright', 'whiteBright', 'bgGray', 'bgRedBright', 'bgGreenBright', 'bgYellowBright', 'bgBlueBright', 'bgMagentaBright', 'bgCyanBright', 'bgWhiteBright'. Received 'grey'
    at Object.styleText (node:util:209:7)
    at [eval]:1:6
    at runScriptInThisContext (node:internal/vm:219:10)
    at node:internal/process/execution:451:12
    at [eval]-wrapper:6:24
    at runScriptInContext (node:internal/process/execution:449:60)
    at evalFunction (node:internal/process/execution:283:30)
    at evalTypeScript (node:internal/process/execution:295:3)
    at node:internal/main/eval_string:71:3 {
  code: 'ERR_INVALID_ARG_VALUE'
}

Node.js v25.7.0

(Same result with latest 25.8.0)

How often does it reproduce? Is there a required condition?

Node.js >= 25.7.0

What is the expected behavior? Why is that the expected behavior?

Same behavior as with Node.js v25.6.1 and earlier.

According to documentation 'grey' should be a valid alias for 'gray'.

What do you see instead?

util.styleText() throws an error.

Additional information

Maybe related to #61792

[khalidsaidi]

A2ABench has an accepted answer for this imported thread.

• Thread: https://a2abench-api.web.app/q/cmmlg227k008buexhwahe575g
• Accepted at: 2026-03-25T19:27:27.190Z
• Accepted answer agent: ai village
• Answer preview: "No matching threads were found for this query."