Translate
tagspaces/tagspaces
Translate new or untranslated i18n strings from the English locale files (core.json + peri.json) into all other locales, maintaining consistency with each language's existing translations.
Translate ECMAScript 262 /u mode regular expressions to .NET regex patterns.
$ npx skills add corvus-dotnet/Corvus.JsonSchema --skill corvus-ecma-regex -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install corvus-dotnet/Corvus.JsonSchema corvus-ecma-regex --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/corvus-dotnet/Corvus.JsonSchema.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.github/skills/corvus-ecma-regex .claude/skills/corvus-ecma-regex && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "corvus-ecma-regex" agent skill from https://github.com/corvus-dotnet/Corvus.JsonSchema/tree/main/.github/skills/corvus-ecma-regex into .claude/skills/corvus-ecma-regex/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "corvus-ecma-regex", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/corvus-dotnet/Corvus.JsonSchema/tree/main/.github/skills/corvus-ecma-regexType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add corvus-dotnet/Corvus.JsonSchema --skill corvus-ecma-regex -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install corvus-dotnet/Corvus.JsonSchema corvus-ecma-regex --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/corvus-dotnet/Corvus.JsonSchema.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.github/skills/corvus-ecma-regex .agents/skills/corvus-ecma-regex && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "corvus-ecma-regex" agent skill from https://github.com/corvus-dotnet/Corvus.JsonSchema/tree/main/.github/skills/corvus-ecma-regex into .agents/skills/corvus-ecma-regex/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "corvus-ecma-regex", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add corvus-dotnet/Corvus.JsonSchema --skill corvus-ecma-regex -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install corvus-dotnet/Corvus.JsonSchema corvus-ecma-regex --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/corvus-dotnet/Corvus.JsonSchema.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.github/skills/corvus-ecma-regex .cursor/skills/corvus-ecma-regex && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "corvus-ecma-regex" agent skill from https://github.com/corvus-dotnet/Corvus.JsonSchema/tree/main/.github/skills/corvus-ecma-regex into .cursor/skills/corvus-ecma-regex/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "corvus-ecma-regex", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/corvus-dotnet/Corvus.JsonSchema.git --path .github/skills/corvus-ecma-regex--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add corvus-dotnet/Corvus.JsonSchema --skill corvus-ecma-regex -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install corvus-dotnet/Corvus.JsonSchema corvus-ecma-regex --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/corvus-dotnet/Corvus.JsonSchema.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.github/skills/corvus-ecma-regex .gemini/skills/corvus-ecma-regex && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "corvus-ecma-regex" agent skill from https://github.com/corvus-dotnet/Corvus.JsonSchema/tree/main/.github/skills/corvus-ecma-regex into .gemini/skills/corvus-ecma-regex/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "corvus-ecma-regex", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install corvus-dotnet/Corvus.JsonSchema corvus-ecma-regexInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add corvus-dotnet/Corvus.JsonSchema --skill corvus-ecma-regex -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/corvus-dotnet/Corvus.JsonSchema.git skills-src && mkdir -p .github/skills && cp -r skills-src/.github/skills/corvus-ecma-regex .github/skills/corvus-ecma-regex && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "corvus-ecma-regex" agent skill from https://github.com/corvus-dotnet/Corvus.JsonSchema/tree/main/.github/skills/corvus-ecma-regex into .github/skills/corvus-ecma-regex/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "corvus-ecma-regex", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add corvus-dotnet/Corvus.JsonSchema --skill corvus-ecma-regex -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install corvus-dotnet/Corvus.JsonSchema corvus-ecma-regex --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/corvus-dotnet/Corvus.JsonSchema.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.github/skills/corvus-ecma-regex .opencode/skills/corvus-ecma-regex && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "corvus-ecma-regex" agent skill from https://github.com/corvus-dotnet/Corvus.JsonSchema/tree/main/.github/skills/corvus-ecma-regex into .opencode/skills/corvus-ecma-regex/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "corvus-ecma-regex", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
corvus-ecma-regexTranslate ECMAScript 262 /u mode regular expressions to .NET regex patterns.
Corvus Ecma Regex is an agent skill from corvus-dotnet/Corvus.JsonSchema. Translate ECMAScript 262 /u mode regular expressions to .NET regex patterns. Covers semantic differences between ECMAScript and .NET regex engines, supplementary code point handling via surrogate pairs, Unicode property escapes, backreference conditionals, character class strategies, and strict /u mode validation. USE FOR: understanding regex translation in generated validation code, debugging pattern matching issues in JSON Schema pattern/patternProperties, extending regex support for new Unicode properties or…
Its SKILL.md is about 1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Writing & Content, covering Translation. It works with JavaScript and .NET. The repository describes itself as: Support for Json Schema validation and entity generation. The licence is Apache-2.0.
Read from SKILL.md and the folder at commit 973097f. It shows what the files ask for, not the result of running them.
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
No scripts in the folder and no shell commands in SKILL.md (its code samples are csharp).
From the folder's file list and the shell code blocks in SKILL.md.
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Corvus Ecma Regex loads about 1k tokens when it runs. Until then it costs about 155 tokens; SKILL.md has 311 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
The full file from corvus-dotnet/Corvus.JsonSchema at commit 973097f, republished under its Apache-2.0 licence (© corvus-dotnet). 311 words, ~1,038 tokens.
.claude/skills/corvus-ecma-regex/SKILL.md (or your agent's skills folder).The translator is in src/Corvus.Text.Json.CodeGeneration/EcmaRegexTranslator.cs:
// Translate an ECMAScript /u mode pattern to .NET
string dotnetPattern = EcmaRegexTranslator.Translate(@"\d+\.\d+");
// Non-throwing variant with span output
OperationStatus status = EcmaRegexTranslator.TryTranslate(
ecmaPattern, buffer, out int charsWritten);
// Safe fallback — returns original pattern if translation fails
string pattern = EcmaRegexTranslator.TranslateOrFallback(ecmaPattern);| ECMAScript Pattern | .NET Translation | Reason |
|---|---|---|
. | [^\n\r\u2028\u2029] | Dot excludes specific line terminators |
$ | \z | ECMAScript $ matches only at the end; .NET $ also matches before a final \n |
\d | [0-9] | ASCII digits only |
\u{1F600} | (?:\uD83D\uDE00) | Supplementary char → surrogate pair |
(a)\1 | (a)(?(1)\1) | Backreference wrapped in conditional |
[a\D] | (?:[a]|[^0-9]) | Negated shorthand in class uses alternation |
JSON Schema's pattern keyword uses ECMAScript regex semantics (ECMA 262 /u mode).
.NET's System.Text.RegularExpressions has different semantics for several constructs.
The translator converts ECMAScript patterns to equivalent .NET patterns.
| ECMAScript | .NET Translation | Reason |
|---|---|---|
\d | [0-9] | .NET \d matches Unicode digits; ECMAScript only ASCII |
\w | [a-zA-Z0-9_] | .NET \w matches Unicode word chars |
\s | Explicit ECMAScript whitespace set | Different whitespace sets |
. | [^\n\r\u2028\u2029] | ECMAScript excludes 4 line terminators |
\b → explicit lookaround assertions using ASCII word characters only (ECMAScript definition).
\u{XXXXX} (code points above U+FFFF) → (?:\uHHHH\uLLLL) surrogate pair in .NET.
ECMAScript treats non-participating groups as always-matching. Translated to:
(?(N)\N) — .NET conditional syntax that checks if group N participated.
\p{Script=Latin} → expanded character class ranges (34 BMP + 5 supplementary ranges).
Binary properties like \p{Emoji} → equivalent .NET character class unions.
The translator is zero-allocation using:
ref struct translator typestackalloc for small intermediate buffersArrayPool<char> for larger buffersThe translated regex pattern is then compiled using RegexOptions.Compiled for
repeated use in validation.
Before translating, the code generator classifies patterns:
| Classification | Example | Optimization |
|---|---|---|
Noop | .*, [\s\S]* | Skip validation entirely |
NonEmpty | .+, . | Some character that is not a line terminator |
Prefix | ^foo | StartsWith("foo") |
Range | ^.{1,256}$, ^.*$, ^.+$ | No line terminator, and a length in range |
FullRegex | Everything else | Full compiled regex |
corvus-standalone-evaluatorcorvus-keywords-and-validationdocs/EcmaRegexTranslator.md, docs/EcmaRegexTranslations.md© corvus-dotnet, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Just SKILL.md in .github/skills/corvus-ecma-regex of corvus-dotnet/Corvus.JsonSchema.
Open the folder on GitHubat commit 973097f
Corvus Ecma Regex next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Corvus Ecma Regex this skillcorvus-dotnet/Corvus.JsonSchema | 199 | — | ~1k | Automated safety check: Pass | Apache-2.0 | |
| Translatetagspaces/tagspaces | 5.3k | — | ~2.2k | Automated safety check: Pass | AGPL-3.0 | |
| Stylexpurefunctor/purescript-iris | 117 | — | ~2.7k | Automated safety check: Pass | Custom licence | |
| Frappe Core TranslationImpertio-Studio/Frappe_Claude_Skill_Package | 188 | — | ~1.9k | Automated safety check: Pass | MIT | |
| Azure AI Translation TSmicrosoft/skills | 3.1k | — | ~2k | Automated safety check: Pass | MIT | |
| Error Translatorlaolaoshiren/claude-code-skills-zh | 879 | — | ~609 | Automated safety check: Pass | MIT |
tagspaces/tagspaces
Translate new or untranslated i18n strings from the English locale files (core.json + peri.json) into all other locales, maintaining consistency with each language's existing translations.
purefunctor/purescript-iris
Write StyleX styles in PureScript with Iris through the built-in Iris.StyleX, Iris.StyleX.When, and Iris.StyleX.Types modules, which Iris compiles to @stylexjs/stylex calls.
Impertio-Studio/Frappe_Claude_Skill_Package
A skill your agent uses when implementing translations/i18n in Frappe v14-v16 apps.
microsoft/skills
Build translation applications using Azure Translation SDKs for JavaScript (@azure-rest/ai-translation-text, @azure-rest/ai-translation-document).
laolaoshiren/claude-code-skills-zh
编程错误消息翻译专家 — 将英文错误消息翻译成中文,解释原因并提供修复方案
ArabelaTso/Skills-4-SE
Translate source code between programming languages at function, class, and module levels while preserving behavior and generating verification tests.
corvus-dotnet/Corvus.JsonSchema
Understand and work with the Roslyn analyzers shipped with Corvus.Text.Json.
corvus-dotnet/Corvus.JsonSchema
Run, interpret, and maintain BenchmarkDotNet benchmarks for JSON Schema validation and query languages.
corvus-dotnet/Corvus.JsonSchema
Test Corvus.JsonSchema against the JSON Schema Test Suite using Bowtie, the cross-implementation meta-validator.
corvus-dotnet/Corvus.JsonSchema
Write allocation-efficient buffer code in Corvus.JsonSchema using the codebase's established three-tier pooling pattern: stackalloc → ArrayPool → ThreadStatic caches.
corvus-dotnet/Corvus.JsonSchema
Eliminate hand-rolled POCO record<-document string seams — types/paths that materialize a managed string (or List<string/Dictionary) between a bytes SOURCE (a parsed UTF-8 body, a DB column, a…
corvus-dotnet/Corvus.JsonSchema
Generate strongly-typed C from JSON Schema using the Roslyn source generator or the corvusjson CLI tool.
Works with
Categories
Translate ECMAScript 262 /u mode regular expressions to .NET regex patterns. JsonSchema.NET regex patterns.
Corvus Ecma Regex fits situations like: : understanding regex translation in generated validation code; debugging pattern matching issues in JSON Schema pattern/patternProperties; extending regex support for new Unicode properties; : general .NET regex usage.
Run `npx skills add corvus-dotnet/Corvus.JsonSchema --skill corvus-ecma-regex -a claude-code`. Or copy the skill folder (.github/skills/corvus-ecma-regex in corvus-dotnet/Corvus.JsonSchema) into .claude/skills/corvus-ecma-regex in your project. Claude Code loads it when a task matches its description.
Run `npx skills add corvus-dotnet/Corvus.JsonSchema --skill corvus-ecma-regex -a codex`. Or copy the skill folder (.github/skills/corvus-ecma-regex in corvus-dotnet/Corvus.JsonSchema) into .agents/skills/corvus-ecma-regex in your project. Codex loads it when a task matches its description.
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add corvus-dotnet/Corvus.JsonSchema --skill corvus-ecma-regex -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/corvus-ecma-regex, .gemini/skills/corvus-ecma-regex, .github/skills/corvus-ecma-regex and .opencode/skills/corvus-ecma-regex in your project.
SKILL.md names no scripts, command-line tools or credentials: Corvus Ecma Regex is instructions for the agent only.
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
Corvus Ecma Regex is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
About 1k tokens (SKILL.md is roughly 4.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
Skills that share tags, products or a category with Corvus Ecma Regex: Translate (tagspaces/tagspaces, 5.3k stars), Stylex (purefunctor/purescript-iris, 117 stars), Frappe Core Translation (Impertio-Studio/Frappe_Claude_Skill_Package, 188 stars) and Azure AI Translation TS (microsoft/skills, 3.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
corvus-dotnet (a GitHub organization) maintains it in corvus-dotnet/Corvus.JsonSchema, which has 199 GitHub stars. The repository holds 28 skills in this directory. The repository was last updated on October 9, 2026.
Source: corvus-dotnet/Corvus.JsonSchema on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.