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no-es6-static-methods.js
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no-es6-static-methods.js
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'use strict';
module.exports = {
meta: {
docs: {
description: 'Forbid methods added in ES6'
},
schema: [{
type: 'object',
properties: {
exceptMethods: {
type: 'array',
items: {
type: 'string'
}
}
}
}]
},
create(context) {
const options = Object.assign({ exceptMethods: [] }, context.options[0]);
const exceptMethods = new Set(options.exceptMethods);
const es6StaticFunctions = [
'Array.from',
'Array.of',
'Math.acosh',
'Math.hypot',
'Math.trunc',
'Math.imul',
'Math.sign',
'Number.isNaN',
'Number.isFinite',
'Number.isInteger',
'Number.isSafeInteger',
'Number.parseFloat',
'Number.parseInt',
'Object.assign',
'Object.is',
'Object.getOwnPropertySymbols',
'Object.setPrototypeOf',
];
const staticFunctions = es6StaticFunctions.filter((name) => !exceptMethods.has(name));
return {
CallExpression(node) {
if(node.callee && node.callee.property && node.callee.object) {
const functionName = node.callee.object.name + '.' + node.callee.property.name;
if(staticFunctions.includes(functionName)) {
context.report({
node: node.callee.property,
message: 'ES6 static methods not allowed: ' + functionName
});
}
}
}
};
}
};