Function getProp

article/utils.ts:195–203

(property: p.TSESTree.ObjectLiteralElement)

}

function getProp(property: p.TSESTree.ObjectLiteralElement) {
  if (property.type === "SpreadElement") error("spread operator is not allowed", property);
  if (property.computed) error("key must be bare", property);
  if (property.value.type === "AssignmentPattern") error("AssignmentPattern is not allowed", property);
  if (property.value.type === "TSEmptyBodyFunctionExpression") {
    error("TSEmptyBodyFunctionExpression is not allowed", property);
  }
  return { key: getIdentifier(property.key), value: property.value };
}

function getTagAndVal(node: p.TSESTree.ObjectExpression) {
  if (node.properties.length !== 2) error(`tagged union must be <TYPE>{ tag: "TAG", val: EXPR }`, node);