Every example is executed
186 of 187 pages show a worked example, and not one of them was typed by hand. Each is either the fixture the test suite asserts, or the real return value captured by running the function on the input its own test provides.
Reference · v0.6.0
The algorithms behind market data, corporate actions, indices and breadth
187 zero-dependency TypeScript implementations. Plain arrays and objects in, plain values out — no client to construct, no API key, no provider baked in.
- Topics
- 187
- Domains
- 9
- Worked examples
- 186
- Verified
- 79
Browse by domain
D01
Market Data Engineering
23 topics · 4 families
D02Corporate Actions and Security Master Data
19 topics · 4 families
D03Index and Benchmark Engineering
40 topics · 6 families
D04Market Breadth and Internals
28 topics · 5 families
D06Price Action and Candlesticks
2 topics · 1 family
D07Technical Indicators
37 topics · 5 families
D08Geometric Chart Patterns
10 topics · 2 families
D09Statistical Time Series
23 topics · 4 families
D46Earnings and Per-Share Analytics
5 topics · 2 families
Bring your own data
No HTTP client, no vendor SDK, no node:fs, zero runtime dependencies.
You write one adapter from your provider's payload and own it; when the vendor changes
their API you edit that file and the algorithms never move.