Current File : /var/www/html/node_modules/jsx-ast-utils/src/values/expressions/TSNonNullExpression.js
const extractValueFromThisExpression = require('./ThisExpression').default;
/**
* Extractor function for a TSNonNullExpression type value node.
* A TSNonNullExpression is accessing a TypeScript Non-Null Assertion
* Operator !
*
* @param - value - AST Value object with type `TSNonNullExpression`
* @returns - The extracted value converted to correct type
* and maintaing `obj.property` convention.
*/
export default function extractValueFromTSNonNullExpression(value) {
// eslint-disable-next-line global-require
// const getValue = require('.').default;
const errorMessage = 'The prop value with an expression type of TSNonNullExpression could not be resolved. Please file an issue ( https://github.com/jsx-eslint/jsx-ast-utils/issues/new ) to get this fixed immediately.';
// it's just the name
if (value.type === 'Identifier') {
const { name } = value;
return name;
}
if (value.type === 'ThisExpression') {
return extractValueFromThisExpression();
}
// does not contains properties & is not parenthesized
if (value.type === 'TSNonNullExpression' && (!value.extra || value.extra.parenthesized === false)) {
const { expression } = value;
return `${extractValueFromTSNonNullExpression(expression)}${'!'}`;
}
// does not contains properties & is parenthesized
if (value.type === 'TSNonNullExpression' && value.extra && value.extra.parenthesized === true) {
const { expression } = value;
return `${'('}${extractValueFromTSNonNullExpression(expression)}${'!'}${')'}`;
}
// contains a property & is not parenthesized
if (value.type === 'MemberExpression' && (!value.extra || value.extra.parenthesized === false)) {
return `${extractValueFromTSNonNullExpression(value.object)}${value.optional ? '?.' : '.'}${extractValueFromTSNonNullExpression(value.property)}`;
}
// contains a property & is parenthesized
if (value.type === 'MemberExpression' && value.extra && value.extra.parenthesized === true) {
return `${'('}${extractValueFromTSNonNullExpression(value.object)}${value.optional ? '?.' : '.'}${extractValueFromTSNonNullExpression(value.property)}${')'}`;
}
// try to fail silently, if specs for TSNonNullExpression change
// not throw, only log error. Similar to how it was done previously
if (value.expression) {
let { expression } = value;
while (expression) {
if (expression.type === 'Identifier') {
// eslint-disable-next-line no-console
console.error(errorMessage);
return expression.name;
}
({ expression } = expression);
}
}
// eslint-disable-next-line no-console
console.error(errorMessage);
return '';
}
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