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25 lines
871 B
Plaintext
25 lines
871 B
Plaintext
/**
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* Extractor function for a LogicalExpression type value node.
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* A logical expression is `a && b` or `a || b`, so we evaluate both sides
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* and return the extracted value of the expression.
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*
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* @param - value - AST Value object with type `LogicalExpression`
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* @returns - The extracted value converted to correct type.
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*/
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export default function extractValueFromLogicalExpression(value) {
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// eslint-disable-next-line global-require
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const getValue = require('.').default;
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const { operator, left, right } = value;
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const leftVal = getValue(left);
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const rightVal = getValue(right);
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if (operator === '&&') {
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return leftVal && rightVal;
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}
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if (operator === '??') {
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// return leftVal ?? rightVal; // TODO: update to babel 7
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return (leftVal === null || typeof leftVal === 'undefined') ? rightVal : leftVal;
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}
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return leftVal || rightVal;
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}
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