98 lines
3.2 KiB
Plaintext
98 lines
3.2 KiB
Plaintext
const extractValueFromThisExpression = require('./ThisExpression').default;
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const extractValueFromCallExpression = require('./CallExpression').default;
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function navigate(obj, prop, value) {
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if (value.computed) {
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return value.optional ? `${obj}?.[${prop}]` : `${obj}[${prop}]`;
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}
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return value.optional ? `${obj}?.${prop}` : `${obj}.${prop}`;
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}
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/**
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* Extractor function for a TSNonNullExpression type value node.
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* A TSNonNullExpression is accessing a TypeScript Non-Null Assertion
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* Operator !
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*
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* @param - value - AST Value object with type `TSNonNullExpression`
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* @returns - The extracted value converted to correct type
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* and maintaing `obj.property` convention.
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*/
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export default function extractValueFromTSNonNullExpression(value) {
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// eslint-disable-next-line global-require
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// const getValue = require('.').default;
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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.';
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// it's just the name
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if (value.type === 'Identifier') {
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const { name } = value;
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return name;
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}
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if (value.type === 'Literal') {
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return value.value;
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}
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if (value.type === 'TSAsExpression') {
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return extractValueFromTSNonNullExpression(value.expression);
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}
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if (value.type === 'CallExpression') {
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return extractValueFromCallExpression(value);
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}
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if (value.type === 'ThisExpression') {
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return extractValueFromThisExpression();
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}
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// does not contains properties & is not parenthesized
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if (value.type === 'TSNonNullExpression' && (!value.extra || value.extra.parenthesized === false)) {
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const { expression } = value;
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return `${extractValueFromTSNonNullExpression(expression)}${'!'}`;
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}
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// does not contains properties & is parenthesized
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if (value.type === 'TSNonNullExpression' && value.extra && value.extra.parenthesized === true) {
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const { expression } = value;
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return `${'('}${extractValueFromTSNonNullExpression(expression)}${'!'}${')'}`;
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}
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if (value.type === 'MemberExpression') {
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// contains a property & is not parenthesized
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if ((!value.extra || value.extra.parenthesized === false)) {
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return navigate(
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extractValueFromTSNonNullExpression(value.object),
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extractValueFromTSNonNullExpression(value.property),
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value,
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);
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}
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// contains a property & is parenthesized
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if (value.extra && value.extra.parenthesized === true) {
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const result = navigate(
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extractValueFromTSNonNullExpression(value.object),
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extractValueFromTSNonNullExpression(value.property),
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value,
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);
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return `(${result})`;
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}
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}
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// try to fail silently, if specs for TSNonNullExpression change
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// not throw, only log error. Similar to how it was done previously
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if (value.expression) {
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let { expression } = value;
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while (expression) {
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if (expression.type === 'Identifier') {
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// eslint-disable-next-line no-console
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console.error(errorMessage);
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return expression.name;
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}
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({ expression } = expression);
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}
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}
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// eslint-disable-next-line no-console
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console.error(errorMessage);
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return '';
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}
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