@citation-js/core/lib-mjs/plugin-common/output/json.js

Convert different bibliographic metadata sources

import * as plugins from '../../plugins/index.js';
import * as util from '../../util/index.js';
import logger from '../../logger.js';
function appendCommas(string, index, array) {
  return string + (index < array.length - 1 ? ',' : '');
}
function getJsonObject(src, dict) {
  const isArray = Array.isArray(src);
  let entries;
  if (isArray) {
    entries = src.map(entry => getJsonValue(entry, dict));
  } else {
    entries = Object.keys(src).filter(prop => JSON.stringify(src[prop])).map(prop => `"${prop}": ${getJsonValue(src[prop], dict)}`);
  }
  entries = entries.map(appendCommas).map(entry => dict.listItem.join(entry));
  entries = dict.list.join(entries.join(''));
  return isArray ? `[${entries}]` : `{${entries}}`;
}
function getJsonValue(src, dict) {
  if (typeof src === 'object' && src !== null) {
    if (src.length === 0) {
      return '[]';
    } else if (Object.keys(src).length === 0) {
      return '{}';
    } else {
      return getJsonObject(src, dict);
    }
  } else {
    return JSON.stringify(src);
  }
}
function getJson(src, dict) {
  let entries = src.map(entry => getJsonObject(entry, dict));
  entries = entries.map(appendCommas).map(entry => dict.entry.join(entry));
  entries = entries.join('');
  return dict.bibliographyContainer.join(`[${entries}]`);
}
export function getJsonWrapper(src) {
  return getJson(src, plugins.dict.get('html'));
}
export default {
  data(data, {
    type,
    format = type || 'text',
    version = '1.0.2'
  } = {}) {
    if (version < '1.0.2') {
      data = util.downgradeCsl(data);
    }
    if (format === 'object') {
      return util.deepCopy(data);
    } else if (format === 'text') {
      return JSON.stringify(data, null, 2);
    } else {
      logger.warn('[core]', 'This feature (JSON output with special formatting) is unstable. See https://github.com/larsgw/citation.js/issues/144');
      return getJson(data, plugins.dict.get(format));
    }
  },
  ndjson(data, {
    version = '1.0.2'
  } = {}) {
    if (version < '1.0.2') {
      data = util.downgradeCsl(data);
    }
    return data.map(entry => JSON.stringify(entry)).join('\n');
  }
};