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/*--------------------------------------------------------------------------------------------- | ||
* Copyright (c) Microsoft Corporation. All rights reserved. | ||
* Licensed under the MIT License. See License.txt in the project root for license information. | ||
*--------------------------------------------------------------------------------------------*/ | ||
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import * as eslint from 'eslint'; | ||
import { dirname, relative } from 'path'; | ||
import minimatch from 'minimatch'; | ||
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export = new class implements eslint.Rule.RuleModule { | ||
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readonly meta: eslint.Rule.RuleMetaData = { | ||
messages: { | ||
layerbreaker: 'You are only allowed to define limited top level functions.' | ||
}, | ||
schema: { | ||
type: "array", | ||
items: { | ||
type: "object", | ||
additionalProperties: { | ||
type: "array", | ||
items: { | ||
type: "string" | ||
} | ||
} | ||
} | ||
} | ||
}; | ||
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create(context: eslint.Rule.RuleContext): eslint.Rule.RuleListener { | ||
let fileRelativePath = relative(dirname(__dirname), context.getFilename()); | ||
if (!fileRelativePath.endsWith('/')) { | ||
fileRelativePath += '/'; | ||
} | ||
const ruleArgs = <Record<string, string[]>>context.options[0]; | ||
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const matchingKey = Object.keys(ruleArgs).find(key => fileRelativePath.startsWith(key) || minimatch(fileRelativePath, key)); | ||
if (!matchingKey) { | ||
// nothing | ||
return {}; | ||
} | ||
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const restrictedFunctions = ruleArgs[matchingKey]; | ||
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return { | ||
FunctionDeclaration: (node: any) => { | ||
const isTopLevel = node.parent.type === 'Program'; | ||
const functionName = node.id.name; | ||
if (isTopLevel && !restrictedFunctions.includes(node.id.name)) { | ||
context.report({ | ||
node, | ||
message: `Top-level function '${functionName}' is restricted in this file. Allowed functions are: ${restrictedFunctions.join(', ')}.` | ||
}); | ||
} | ||
}, | ||
ExportNamedDeclaration(node: any) { | ||
if (node.declaration && node.declaration.type === 'FunctionDeclaration') { | ||
const functionName = node.declaration.id.name; | ||
const isTopLevel = node.parent.type === 'Program'; | ||
if (isTopLevel && !restrictedFunctions.includes(node.declaration.id.name)) { | ||
context.report({ | ||
node, | ||
message: `Top-level function '${functionName}' is restricted in this file. Allowed functions are: ${restrictedFunctions.join(', ')}.` | ||
}); | ||
} | ||
} | ||
} | ||
} | ||
} | ||
}; |
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