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codeql-action/node_modules/jsx-ast-utils/src/values/expressions/UpdateExpression.js
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/** | |
* Extractor function for an UpdateExpression type value node. | |
* An update expression is an expression with an update operator. | |
* For example, foo++ will evaluate to foo + 1. | |
* | |
* @param - value - AST Value object with type `UpdateExpression` | |
* @returns - The extracted value converted to correct type. | |
*/ | |
export default function extractValueFromUpdateExpression(value) { | |
// eslint-disable-next-line global-require | |
const getValue = require('.').default; | |
const { operator, argument, prefix } = value; | |
let val = getValue(argument); | |
switch (operator) { | |
case '++': | |
return prefix ? ++val : val++; // eslint-disable-line no-plusplus | |
case '--': | |
return prefix ? --val : val--; // eslint-disable-line no-plusplus | |
default: | |
return undefined; | |
} | |
} |