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requireParameterType.js
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requireParameterType.js
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import _ from 'lodash';
import {
getParameterName,
iterateFunctionNodes,
quoteName,
} from '../utilities';
const schema = [
{
additionalProperties: false,
properties: {
excludeArrowFunctions: {
enum: [false, true, 'expressionsOnly'],
},
excludeParameterMatch: {
type: 'string',
},
},
type: 'object',
},
];
const create = iterateFunctionNodes((context) => {
const skipArrows = _.get(context, 'options[0].excludeArrowFunctions');
const excludeParameterMatch = new RegExp(_.get(context, 'options[0].excludeParameterMatch', 'a^'), 'u');
return (functionNode) => {
// It is save to ignore FunctionTypeAnnotation nodes in this rule.
if (functionNode.type === 'FunctionTypeAnnotation') {
return;
}
const isArrow = functionNode.type === 'ArrowFunctionExpression';
const isArrowFunctionExpression = functionNode.expression;
const functionAnnotation = isArrow && _.get(functionNode, 'parent.id.typeAnnotation');
if (skipArrows === 'expressionsOnly' && isArrowFunctionExpression || skipArrows === true && isArrow) {
return;
}
// eslint-disable-next-line unicorn/no-array-for-each
_.forEach(functionNode.params, (identifierNode) => {
const parameterName = getParameterName(identifierNode, context);
if (excludeParameterMatch.test(parameterName)) {
return;
}
let typeAnnotation;
typeAnnotation = _.get(identifierNode, 'typeAnnotation') || _.get(identifierNode, 'left.typeAnnotation');
if (isArrow && functionAnnotation) {
typeAnnotation = true;
}
if (!typeAnnotation) {
context.report({
data: {
name: quoteName(parameterName),
},
message: 'Missing {{name}}parameter type annotation.',
node: identifierNode,
});
}
});
};
});
export default {
create,
schema,
};