Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add rules/adonai-labs/agent-runway/typescriptgit clone --depth 1 https://github.com/adonai-labs/agent-runwayWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/rules/adonai-labs/agent-runway/typescript)<a href="https://agentmods.dev/rules/adonai-labs/agent-runway/typescript"><img src="https://agentmods.dev/badge/rules/adonai-labs/agent-runway/typescript.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00000 | $0.01942 |
| Opus 5 | $0.00000 | $0.00971 |
| Sonnet 5 | $0.00000 | $0.00388 |
| Haiku 4.5 | $0.00000 | $0.00194 |
Grade A, and why
typescript scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 194 lines — stays where its author put it; the contents beside it link to each section on GitHub.
TypeScript Best Practices
Directives for type-safe, maintainable TypeScript. Australian English spelling throughout.
Strict Configuration
Enable these compilerOptions; do not disable strict mode.
| Option | Purpose |
|---|---|
strict: true |
Enables strict null checks, no implicit any, strict function types |
noUnusedLocals |
Error on unused variables |
noUnusedParameters |
Error on unused function parameters |
noFallthroughCasesInSwitch |
Require break in switch |
noUncheckedIndexedAccess |
Index access returns T | undefined |
exactOptionalPropertyTypes |
Distinguish undefined from omitted optional props |
noImplicitReturns |
All code paths must return |
noImplicitOverride |
Require override when overriding |
allowUnreachableCode: false |
Error on unreachable code |
- Do not use
skipLibCheck: trueunless necessary for legacy dependencies - Prefer
moduleResolution: "bundler"for modern bundlers;"node16"for Node
Path Mapping
- Use
baseUrl: "."andpathsfor aliases (e.g.@/*,@components/*,@utils/*) - Prefer short, consistent aliases over long relative imports
- For Electron: separate
tsconfig.main.jsonandtsconfig.renderer.jsonwith distinctinclude/excludeandrootDir/outDir - Ensure
pathsresolve correctly in both IDE and build; extend from a base config if shared
Utility Types
| Use case | Type |
|---|---|
| Partial nested object | DeepPartial<T> |
| Require specific keys | RequiredFields<T, K> or Required<Pick<T, K>> |
| Make specific keys optional | OptionalFields<T, K> or Partial<Pick<T, K>> & Omit<T, K> |
| Ensure keys are non-null | NonNullableFields<T, K> |
| Event handler | (event: T) => void or Promise<void> |
| Async/sync function types | (...args: TArgs) => Promise<TReturn> vs (...args: TArgs) => TReturn |
- Use
Pick<T, K>for a subset of keys;Omit<T, K>when excluding keys - Use
Record<K, V>for object maps; avoid{ [key: string]: T }when keys are known - Prefer
Awaited<T>over manual unwrapping ofPromise<T>
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago First seen · 194 lines · 0 tokens per session scan A 604bfce5d075
typescript is a cursor rule published in the GitHub repository adonai-labs/agent-runway (2 stars, last pushed 16d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,942 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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