48 lines
1.2 KiB
JavaScript
48 lines
1.2 KiB
JavaScript
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'use strict';
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/**
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Check if parentheses should be added to a `node` when it's used as child of `LogicalExpression`.
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@param {Node} node - The AST node to check.
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@param {{operator: string, property: string}} options - Options
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@returns {boolean}
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*/
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function shouldAddParenthesesToLogicalExpressionChild(node, {operator, property}) {
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// We are not using this, but we can improve this function with it
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/* c8 ignore next 3 */
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if (!property) {
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throw new Error('`property` is required.');
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}
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if (
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node.type === 'LogicalExpression'
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&& node.operator === operator
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) {
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return false;
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}
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// Not really needed, but more readable
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if (
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node.type === 'AwaitExpression'
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|| node.type === 'BinaryExpression'
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) {
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return true;
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}
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// Lower precedence than `LogicalExpression`
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// see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Operator_Precedence#Table
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if (
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node.type === 'LogicalExpression'
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|| node.type === 'ConditionalExpression'
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|| node.type === 'AssignmentExpression'
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|| node.type === 'ArrowFunctionExpression'
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|| node.type === 'YieldExpression'
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|| node.type === 'SequenceExpression'
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) {
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return true;
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}
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return false;
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}
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module.exports = shouldAddParenthesesToLogicalExpressionChild;
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