Mapping Editor

Editor for data-mapping artefacts. Define a source-to-target schema mapping; the editor emits the JavaScript module that the runtime mapping engine executes.

Component: editor-mapping.

What it does

• Load a source schema (e.g. the shape of a CSV row, REST payload, or DB query result) and a target schema (e.g. a target table or downstream entity).
• Draw field-to-field links on the canvas. Each link can carry a transformation expression (concatenation, casting, lookup, conditional).
• Save - the editor regenerates the backing .js module containing the transform(source) function and its helpers.

Generated code

The generated module exports a single transformation function:

export function transform(source) {
    return {
        customerId: source.id,
        fullName: source.firstName + " " + source.lastName,
        registeredAt: new Date(source.created_at).toISOString()
    };
}

You can edit the generated module directly in the Monaco editor; subsequent changes in the mapping editor will overwrite the generated function but preserve manually added helpers in marked-up regions.

See also

• template-mapping-javascript - the project template that scaffolds a mapping artefact and its generated module.