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- 'use strict';
- /**
- Check if parentheses should be added to a `node` when it's used as child of `LogicalExpression`.
- @param {Node} node - The AST node to check.
- @param {{operator: string, property: string}} options - Options
- @returns {boolean}
- */
- function shouldAddParenthesesToLogicalExpressionChild(node, {operator, property}) {
- /* istanbul ignore next: When operator or property is different, need check `LogicalExpression` operator precedence, not implemented */
- if (operator !== '??' || property !== 'left') {
- throw new Error('Not supported.');
- }
- // Not really needed, but more readable
- if (
- node.type === 'AwaitExpression'
- || node.type === 'BinaryExpression'
- ) {
- return true;
- }
- // Lower precedence than `LogicalExpression`
- // see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Operator_Precedence#Table
- if (
- node.type === 'ConditionalExpression'
- || node.type === 'AssignmentExpression'
- || node.type === 'AssignmentExpression'
- || node.type === 'YieldExpression'
- || node.type === 'SequenceExpression'
- ) {
- return true;
- }
- return false;
- }
- module.exports = shouldAddParenthesesToLogicalExpressionChild;
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