The problem
The constraint worth solving.
Small DSLs and configuration formats often need more rigor than ad hoc string handling but less ceremony than a full external parser-generator workflow.
← All work
Grammar engine
BNFDX
Write grammars in JavaScript. Parse structured input.
A BNF-like parser that expresses grammar rules as JavaScript objects and includes transformation features for higher-level structured output.
The system
What it is.
BNFDX keeps grammar close to the JavaScript code that consumes it instead of requiring separate parser-generator files.
What Resist Design delivered
- BNF-like grammar expressed as plain object structures.
- Transformation features for application-specific output.
- An extensible error model for syntax, semantic, recursion, resource, and custom validation failures.
What this demonstrates
- A reusable parsing layer for custom DSL and configuration experiments.
- A grammar approach that remains native to the JavaScript codebase using it.
Capabilities
ParsersGrammar designDSLsJavaScriptTransformation
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Resist Design works on product architecture, prototypes, production applications, design systems, and the infrastructure that holds them together.
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