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SPARQL query builder written in TypeScript. Can be used from both TypeScript and JavaScript, although type-safety is lost in JavaScript.

Itexposes the following classes:

• QueryBuilder - builder base class
  • SelectBuilder -SELECT query builder
  • DescribeBuilder -DESCRIBE query builder

Thebuild-dist.sh script does the following:

• compiles the TypeScript code usingtsc
• runs unit tests usingnpm test
• packages the library withwebpack
  • for use in the browser (window target, output indist/window)
  • for use with Node.js (commonjs2 target, output indist/node)

The builder is published assparql-builder package on npm. Import it into yourpackage.json:

"dependencies": {"sparql-builder":"^1.0.6"    }

Code intest.ts:

import{SelectBuilder}from'sparql-builder';letquery="SELECT ?s { ?s ?p ?o }";letbuilder=SelectBuilder.fromString(query).limit(42).offset(66).orderBy(SelectBuilder.ordering(SelectBuilder.var("s"),true)).orderBy(SelectBuilder.ordering(SelectBuilder.var("p")));console.log(builder.toString());

Output oftsc && node test.js:

SELECT ?sWHERE { ?s ?p ?o. }ORDERBYDESC (?s) (?p)OFFSET 66LIMIT 42