css-tree

A tool set for CSS: fast detailed parser (CSS → AST), walker (AST traversal), generator (AST → CSS) and lexer (validation and matching) based on specs and browser implementations

v3.1.0 URL: https://unpkg.com/css-tree@3.1.0/dist/csstree.esm.js

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css ast tokenizer parser walker lexer generator utils syntax validation

ajv

Another JSON Schema Validator

v8.17.1 URL: https://unpkg.com/ajv@8.17.1/dist/ajv.js

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JSON schema validator validation jsonschema json-schema json-schema-validator json-schema-validation

joi

Object schema validation

v17.13.3 URL: https://unpkg.com/joi@17.13.3/lib/index.js

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schema validation

@eslint/object-schema

An object schema merger/validator

v2.1.6 URL: https://unpkg.com/@eslint/object-schema@2.1.6/dist/esm/index.js

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object validation schema merge

xmlchars

Utilities for determining if characters belong to character classes defined by the XML specs.

v2.2.0 URL: https://unpkg.com/xmlchars@2.2.0/xmlchars.js

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