fix(eslint-plugin): ignore private identifiers in explicit-module-boundary-types

[JoshuaKGoldberg]

PR Checklist

• Addresses an existing issue: fixes [explicit-module-boundary-types] Explicit module boundary types expects private arrow function to be typed #1740
• That issue was marked as accepting prs
• Steps in CONTRIBUTING.md were taken

Overview

PrivateIdentifier key nodes indicate it's a #.

[typescript-eslint]

Thanks for the PR, @JoshuaKGoldberg!

typescript-eslint is a 100% community driven project, and we are incredibly grateful that you are contributing to that community.

The core maintainers work on this in their personal time, so please understand that it may not be possible for them to review your work immediately.

Thanks again!

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[codecov]

Codecov Report

Merging #4046 (e501142) into master (f418f48) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #4046   +/-   ##
=======================================
  Coverage   93.33%   93.33%           
=======================================
  Files         152      152           
  Lines        8014     8016    +2     
  Branches     2568     2570    +2     
=======================================
+ Hits         7480     7482    +2     
  Misses        180      180           
  Partials      354      354           

Flag	Coverage Δ
unittest	93.33% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...plugin/src/rules/explicit-module-boundary-types.ts	89.40% <100.00%> (+0.14%)	⬆️

[nx-cloud]

Nx Cloud Report

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Status	Command
	Node 16.x - nx test @typescript-eslint/eslint-plugin-tslint
	Node 16.x - nx test @typescript-eslint/eslint-plugin
	Node 12.x - nx test @typescript-eslint/eslint-plugin-tslint
	Node 12.x - nx test @typescript-eslint/eslint-plugin
	Node 12.x - nx test @typescript-eslint/eslint-plugin-internal
	Node 12.x - nx test @typescript-eslint/eslint-plugin-tslint
	Node 12.x - nx test @typescript-eslint/eslint-plugin
	Node 14.x - nx test @typescript-eslint/eslint-plugin-tslint
	Node 14.x - nx test @typescript-eslint/eslint-plugin
	Node 12.x - nx run-many --target=typecheck --all --parallel
	Node 12.x - nx test @typescript-eslint/parser
	Node 12.x - nx test @typescript-eslint/experimental-utils
	Node 12.x - nx test @typescript-eslint/scope-manager
	Node 14.x - nx test @typescript-eslint/parser
	Node 12.x - nx test @typescript-eslint/visitor-keys
	Node 14.x - nx test @typescript-eslint/experimental-utils
	Node 12.x - nx test @typescript-eslint/typescript-estree
	Node 14.x - nx test @typescript-eslint/scope-manager
	Node 12.x - nx run-many --target=build --all --parallel
	Node 14.x - nx test @typescript-eslint/visitor-keys

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[bradzacher]

LGTM! Nice one