Toru Nagashima
システムエンジニア at TIS Inc.
Edogawa, Japan
Summary
🤩
RockstarToru Nagashima is a seasoned system engineer based in Edogawa, Japan, with 13 years of hands-on experience in JavaScript tooling and developer experience. He has made notable open-source contributions to high-profile projects like Babel, ESLint, Acorn, and the VSCode ESLint extension, focusing on parser accuracy, scope analysis, and robust autofix behavior. Comfortable across the stack, Toru’s work spans parser internals, rule development, editor integration, and test automation—often fixing subtle edge cases around class properties, async features, and tokenization. His contributions show a pattern of improving language compliance and developer ergonomics rather than adding flashy features, making code analysis tools more reliable in real-world use.
13 years of coding experience
Stackoverflow
2,047reputation
46kreached
8answers
5questions
javascript
top-5%
profiling
top-1%
eslint
top-5%
Github Skills (50)
babel610
parserator10
static-code-analysis10
debug10
javascript10
parser10
autofill10
abstract-syntax-tree10
testing10
typescript10
eslint10
language-server-protocol10
vscode-extension10
software-quality10
jscript10
Programming languages (9)
Github contributions (5)
mysticatea/eslint-plugin-node
Nov 2015 - Mar 2020
Additional ESLint's rules for Node.js
Role in this project:
Back-end Developer
Back-end DeveloperContributions:56 releases, 351 commits, 64 PRs in 4 years 4 months
Contributions summary:Toru contributed to the ESLint plugin for Node.js by adding new rules and features to enhance code quality and style. Their work involved implementing the `shebang`, `no-missing-require`, and `no-missing-import` rules, which involved writing new code, including tests. The user also enhanced the project's development workflow by introducing scripts for index generation and other development tasks.
eslintnode-jsnpm-packagejavascriptstatic-code-analysis
eslint/eslint
May 2015 - Nov 2021
Find and fix problems in your JavaScript code.
Role in this project:Front-end Developer
Front-end DeveloperContributions:8 reviews, 369 commits, 444 PRs in 6 years 8 months
Contributions summary:Toru appears to be a front-end developer contributing to the ESLint project. Their work focused on rule development, including fixing issues related to the `no-loop-func`, `no-shadow`, `no-unused-vars`, and `no-extra-parens` rules. They also added tests for new features like supporting bigint literals, and incorporating the `require-unicode-regexp` rule.
linterfixeslintproblemsjavascript
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