export function getNewItems()

in eng/tools/lint-diff/src/correlateResults.ts [154:197]

• 34 lines of code
• 13 McCabe index (conditional complexity)

export function getNewItems(
  before: LintDiffViolation[],
  after: LintDiffViolation[],
): [LintDiffViolation[], LintDiffViolation[]] {
  const newItems = [];
  const existingItems = [];

  for (const afterViolation of after) {
    let errorIsNew = true;

    // Always treat fatal errors as new
    if (afterViolation.level.toLowerCase() === "fatal") {
      newItems.push(afterViolation);
      continue;
    }

    // Search through "before" to find a matching violation
    for (const beforeViolation of before) {
      if (
        beforeViolation.level == afterViolation.level &&
        beforeViolation.code == afterViolation.code &&
        beforeViolation.message == afterViolation.message &&
        beforeViolation.source?.length == afterViolation.source?.length &&
        beforeViolation.source?.length &&
        afterViolation.source?.length &&
        isSameSources(beforeViolation.source, afterViolation.source) &&
        arrayIsEqual(beforeViolation.details?.jsonpath, afterViolation.details?.jsonpath)
      ) {
        errorIsNew = false;
        existingItems.push(afterViolation);

        // Only need to find one match
        break;
      }
    }

    // If no match is found, add to new
    if (errorIsNew) {
      newItems.push(afterViolation);
    }
  }

  return [newItems, existingItems];
}