@netwerk-digitaal-erfgoed/ld-workbench/build/utils/getEndpoint.js

LDWorkbench is a Linked Data Transformation tool designed to use only SPARQL as transformation language.

import File from '../file.js';
import { PreviousStage } from '../stage.js';
import { isFilePathString } from './guards.js';
export default function getEndpoint(stage, type = 'iterator', index) {
    const t = type;
    const endpoint = t === 'generator'
        ? stage.configuration[t]?.[index]?.endpoint
        : stage.configuration[t]?.endpoint;
    if (isFilePathString(endpoint)) {
        return new File(endpoint);
    }
    else if (endpoint !== undefined) {
        try {
            return new URL(endpoint);
        }
        catch (e) {
            throw new Error(`"${endpoint}" is not a valid URL`);
        }
    }
    else {
        const stagesSoFar = Array.from(stage.pipeline.stages.keys());
        if (stagesSoFar.length === 0) {
            throw new Error(`no destination defined for the ${type} and no previous stage to use that result`);
        }
        else {
            return new PreviousStage(stage, stagesSoFar.pop());
        }
    }
}
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