40 lines
731 B
JavaScript
40 lines
731 B
JavaScript
'use strict';
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const create = context => {
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const sourceCode = context.getSourceCode();
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return {
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CallExpression(node) {
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if (node.callee.type !== 'MemberExpression'
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|| node.callee.property.type !== 'Identifier'
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|| node.callee.property.name !== 'substr'
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) {
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return;
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}
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const objectNode = node.callee.object;
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const problem = {
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node,
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message: 'Prefer `String#slice()` over `String#substr()`.',
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};
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const canFix = node.arguments.length === 0;
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if (canFix) {
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problem.fix = fixer => fixer.replaceText(node, sourceCode.getText(objectNode) + '.slice()');
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}
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context.report(problem);
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},
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};
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};
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module.exports = {
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create,
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meta: {
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type: 'suggestion',
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fixable: 'code',
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},
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};
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