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/**
* @fileoverview Require `common` module first in our tests.
*/
'use strict';
const path = require('path');
const { isRequireCall, isString } = require('./rules-utils.js');
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
module.exports = function(context) {
const requiredModule = 'common';
const isESM = context.parserOptions.sourceType === 'module';
const foundModules = [];
/**
* Function to check if the path is a module and return its name.
* @param {String} str The path to check
* @returns {String} module name
*/
function getModuleName(str) {
if (str === '../common/index.mjs') {
return 'common';
}
return path.basename(str);
}
/**
* Function to check if a node has an argument that is a module and
* return its name.
* @param {ASTNode} node The node to check
* @returns {undefined|String} module name or undefined
*/
function getModuleNameFromCall(node) {
// Node has arguments and first argument is string
if (node.arguments.length && isString(node.arguments[0])) {
return getModuleName(node.arguments[0].value.trim());
}
return undefined;
}
const rules = {
'Program:exit'(node) {
// The common module should be loaded in the first place.
const notLoadedFirst = foundModules.indexOf(requiredModule) !== 0;
if (notLoadedFirst) {
context.report(
node,
'Mandatory module "{{moduleName}}" must be loaded ' +
'before any other modules.',
{ moduleName: requiredModule }
);
}
}
};
if (isESM) {
rules.ImportDeclaration = (node) => {
const moduleName = getModuleName(node.source.value);
if (moduleName) {
foundModules.push(moduleName);
}
};
} else {
rules.CallExpression = (node) => {
if (isRequireCall(node)) {
const moduleName = getModuleNameFromCall(node);
if (moduleName) {
foundModules.push(moduleName);
}
}
};
}
return rules;
};
|
