81 lines
2.2 KiB
JavaScript
81 lines
2.2 KiB
JavaScript
/**
|
|
* @fileoverview Utility functions for React components detection
|
|
* @author Yannick Croissant
|
|
*/
|
|
|
|
'use strict';
|
|
|
|
/**
|
|
* Search a particular variable in a list
|
|
* @param {Array} variables The variables list.
|
|
* @param {string} name The name of the variable to search.
|
|
* @returns {Boolean} True if the variable was found, false if not.
|
|
*/
|
|
function findVariable(variables, name) {
|
|
return variables.some(variable => variable.name === name);
|
|
}
|
|
|
|
/**
|
|
* Find and return a particular variable in a list
|
|
* @param {Array} variables The variables list.
|
|
* @param {string} name The name of the variable to search.
|
|
* @returns {Object} Variable if the variable was found, null if not.
|
|
*/
|
|
function getVariable(variables, name) {
|
|
return variables.find(variable => variable.name === name);
|
|
}
|
|
|
|
/**
|
|
* List all variable in a given scope
|
|
*
|
|
* Contain a patch for babel-eslint to avoid https://github.com/babel/babel-eslint/issues/21
|
|
*
|
|
* @param {Object} context The current rule context.
|
|
* @returns {Array} The variables list
|
|
*/
|
|
function variablesInScope(context) {
|
|
let scope = context.getScope();
|
|
let variables = scope.variables;
|
|
|
|
while (scope.type !== 'global') {
|
|
scope = scope.upper;
|
|
variables = scope.variables.concat(variables);
|
|
}
|
|
if (scope.childScopes.length) {
|
|
variables = scope.childScopes[0].variables.concat(variables);
|
|
if (scope.childScopes[0].childScopes.length) {
|
|
variables = scope.childScopes[0].childScopes[0].variables.concat(variables);
|
|
}
|
|
}
|
|
variables.reverse();
|
|
|
|
return variables;
|
|
}
|
|
|
|
/**
|
|
* Find a variable by name in the current scope.
|
|
* @param {Object} context The current rule context.
|
|
* @param {string} name Name of the variable to look for.
|
|
* @returns {ASTNode|null} Return null if the variable could not be found, ASTNode otherwise.
|
|
*/
|
|
function findVariableByName(context, name) {
|
|
const variable = getVariable(variablesInScope(context), name);
|
|
|
|
if (!variable || !variable.defs[0] || !variable.defs[0].node) {
|
|
return null;
|
|
}
|
|
|
|
if (variable.defs[0].node.type === 'TypeAlias') {
|
|
return variable.defs[0].node.right;
|
|
}
|
|
|
|
return variable.defs[0].node.init;
|
|
}
|
|
|
|
module.exports = {
|
|
findVariable,
|
|
findVariableByName,
|
|
getVariable,
|
|
variablesInScope
|
|
};
|