TypeError: t.match is not a function

Summary

When running Prettier in VSCode, the following exception is thrown:

["INFO" - 1:43:42 PM] Loaded module 'prettier@1.17.0' from 'C:\Users\nate2\AppData\Roaming\npm\node_modules\prettier'
["INFO" - 1:43:42 PM] Using ignore file (if present) at d:\Documents\Projects\moorecodes\.prettierignore
["INFO" - 1:43:42 PM] File Info:
{
  "ignored": false,
  "inferredParser": "typescript"
}
["INFO" - 1:43:42 PM] No local configuration (i.e. .prettierrc or .editorconfig) detected, falling back to VS Code configuration
["INFO" - 1:43:42 PM] Prettier Options:
{
  "arrowParens": "avoid",
  "bracketSpacing": true,
  "endOfLine": "auto",
  "htmlWhitespaceSensitivity": "css",
  "insertPragma": false,
  "jsxBracketSameLine": false,
  "jsxSingleQuote": false,
  "printWidth": 80,
  "proseWrap": "preserve",
  "quoteProps": "as-needed",
  "requirePragma": false,
  "semi": true,
  "singleQuote": false,
  "tabWidth": 2,
  "trailingComma": "none",
  "useTabs": false,
  "vueIndentScriptAndStyle": false,
  "filepath": "d:\\Documents\\Projects\\moorecodes\\src\\SomeProject\\Header\\index.tsx",
  "parser": "typescript"
}
["INFO" - 1:43:42 PM] Loaded module 'prettier@1.17.0' from 'C:\Users\nate2\AppData\Roaming\npm\node_modules\prettier'
["INFO" - 1:43:42 PM] Formatting using 'prettier-tslint'
["ERROR" - 1:43:42 PM] Error formatting document.
t.match is not a function
TypeError: t.match is not a function
	at Object.e.extract (C:\Users\nate2\AppData\Roaming\npm\node_modules\prettier\parser-babylon.js:1:1119)
	at Object.h [as hasPragma] (C:\Users\nate2\AppData\Roaming\npm\node_modules\prettier\parser-babylon.js:1:2691)
	at format (C:\Users\nate2\AppData\Roaming\npm\node_modules\prettier\index.js:14030:63)
	at formatWithCursor (C:\Users\nate2\AppData\Roaming\npm\node_modules\prettier\index.js:14117:12)
	at C:\Users\nate2\AppData\Roaming\npm\node_modules\prettier\index.js:42518:15
	at format (C:\Users\nate2\AppData\Roaming\npm\node_modules\prettier\index.js:42537:12)
	at c:\Users\nate2\.vscode\extensions\esbenp.prettier-vscode-3.13.0\dist\extension.js:1:352591
	at t.default.safeExecution (c:\Users\nate2\.vscode\extensions\esbenp.prettier-vscode-3.13.0\dist\extension.js:1:353582)
	at t.default.<anonymous> (c:\Users\nate2\.vscode\extensions\esbenp.prettier-vscode-3.13.0\dist\extension.js:1:352554)
	at Generator.next (<anonymous>)
	at s (c:\Users\nate2\.vscode\extensions\esbenp.prettier-vscode-3.13.0\dist\extension.js:1:347571)
["INFO" - 1:43:42 PM] Formatting completed in 17.5141ms.

This happens with both auto-format on save and when running the format command.

VS Code Version:

Version: 1.41.0 (system setup)
Commit: 9579eda04fdb3a9bba2750f15193e5fafe16b959
Date: 2019-12-11T18:37:42.077Z
Electron: 6.1.5
Chrome: 76.0.3809.146
Node.js: 12.4.0
V8: 7.6.303.31-electron.0
OS: Windows_NT x64 10.0.18362

Prettier Extension Version:

Name: Prettier - Code formatter
Id: esbenp.prettier-vscode
Description: Code formatter using prettier
Version: 3.13.0
Publisher: Esben Petersen
VS Marketplace Link: https://marketplace.visualstudio.com/items?itemName=esbenp.prettier-vscode

OS and version:

Windows 10

[mikepulaski]

I have changed my current node version to 10.17.0 and the prettier vscode extension works!.

I shouldn’t have to downgrade node all the way to 10.17.0

I just provide an alternative workaround or a point of reference to track better the issue, In the meantime, if you have a better solution I will love to know it.

You can downgrade to the previous version (3.12.0) from VSCode which will revert the breaking changes introduced in 3.13.0.

You have to reload the window (or restart VSCode) for the changes to take effect.

[ntotten]

I think i fixed it, try updating to 3.14.0. I accidentally left a hard-coded string in that was supposed to be a variable. See: https://github.com/prettier/prettier-vscode/blob/69af3e2713c0e0411b0e1deaf18bfd21dca220c1/src/ModuleResolver.ts#L148

Not sure how tests didn’t get this. I need to investigate, but don’t have time right now. My wife gave birth to our second kid last night so just doing a bit of work while they are both sleeping. 😉

Let me at least know that this fixed the problem.