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packages/kbn-optimizer/src/common/disallowed_syntax_plugin/disallowed_syntax.ts
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/* | ||
* Licensed to Elasticsearch B.V. under one or more contributor | ||
* license agreements. See the NOTICE file distributed with | ||
* this work for additional information regarding copyright | ||
* ownership. Elasticsearch B.V. licenses this file to you under | ||
* the Apache License, Version 2.0 (the "License"); you may | ||
* not use this file except in compliance with the License. | ||
* You may obtain a copy of the License at | ||
* | ||
* http://www.apache.org/licenses/LICENSE-2.0 | ||
* | ||
* Unless required by applicable law or agreed to in writing, | ||
* software distributed under the License is distributed on an | ||
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
* KIND, either express or implied. See the License for the | ||
* specific language governing permissions and limitations | ||
* under the License. | ||
*/ | ||
|
||
import estree from 'estree'; | ||
|
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export interface DisallowedSyntaxCheck { | ||
name: string; | ||
nodeType: estree.Node['type'] | Array<estree.Node['type']>; | ||
test?: (n: any) => boolean | void; | ||
} | ||
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export const checks: DisallowedSyntaxCheck[] = [ | ||
/** | ||
* es2015 | ||
*/ | ||
// https://github.com/estree/estree/blob/master/es2015.md#functions | ||
{ | ||
name: '[es2015] generator function', | ||
nodeType: ['FunctionDeclaration', 'FunctionExpression'], | ||
test: (n: estree.FunctionDeclaration | estree.FunctionExpression) => !!n.generator, | ||
}, | ||
// https://github.com/estree/estree/blob/master/es2015.md#forofstatement | ||
{ | ||
name: '[es2015] for-of statement', | ||
nodeType: 'ForOfStatement', | ||
}, | ||
// https://github.com/estree/estree/blob/master/es2015.md#variabledeclaration | ||
{ | ||
name: '[es2015] let/const variable declaration', | ||
nodeType: 'VariableDeclaration', | ||
test: (n: estree.VariableDeclaration) => n.kind === 'let' || n.kind === 'const', | ||
}, | ||
// https://github.com/estree/estree/blob/master/es2015.md#expressions | ||
{ | ||
name: '[es2015] `super`', | ||
nodeType: 'Super', | ||
}, | ||
// https://github.com/estree/estree/blob/master/es2015.md#expressions | ||
{ | ||
name: '[es2015] ...spread', | ||
nodeType: 'SpreadElement', | ||
}, | ||
// https://github.com/estree/estree/blob/master/es2015.md#arrowfunctionexpression | ||
{ | ||
name: '[es2015] arrow function expression', | ||
nodeType: 'ArrowFunctionExpression', | ||
}, | ||
// https://github.com/estree/estree/blob/master/es2015.md#yieldexpression | ||
{ | ||
name: '[es2015] `yield` expression', | ||
nodeType: 'YieldExpression', | ||
}, | ||
// https://github.com/estree/estree/blob/master/es2015.md#templateliteral | ||
{ | ||
name: '[es2015] template literal', | ||
nodeType: 'TemplateLiteral', | ||
}, | ||
// https://github.com/estree/estree/blob/master/es2015.md#patterns | ||
{ | ||
name: '[es2015] destructuring', | ||
nodeType: ['ObjectPattern', 'ArrayPattern', 'AssignmentPattern'], | ||
}, | ||
// https://github.com/estree/estree/blob/master/es2015.md#classes | ||
{ | ||
name: '[es2015] class', | ||
nodeType: [ | ||
'ClassDeclaration', | ||
'ClassExpression', | ||
'ClassBody', | ||
'MethodDefinition', | ||
'MetaProperty', | ||
], | ||
}, | ||
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/** | ||
* es2016 | ||
*/ | ||
{ | ||
name: '[es2016] exponent operator', | ||
nodeType: 'BinaryExpression', | ||
test: (n: estree.BinaryExpression) => n.operator === '**', | ||
}, | ||
{ | ||
name: '[es2016] exponent assignment', | ||
nodeType: 'AssignmentExpression', | ||
test: (n: estree.AssignmentExpression) => n.operator === '**=', | ||
}, | ||
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/** | ||
* es2017 | ||
*/ | ||
// https://github.com/estree/estree/blob/master/es2017.md#function | ||
{ | ||
name: '[es2017] async function', | ||
nodeType: ['FunctionDeclaration', 'FunctionExpression'], | ||
test: (n: estree.FunctionDeclaration | estree.FunctionExpression) => n.async, | ||
}, | ||
// https://github.com/estree/estree/blob/master/es2017.md#awaitexpression | ||
{ | ||
name: '[es2017] await expression', | ||
nodeType: 'AwaitExpression', | ||
}, | ||
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/** | ||
* es2018 | ||
*/ | ||
// https://github.com/estree/estree/blob/master/es2018.md#statements | ||
{ | ||
name: '[es2018] for-await-of statements', | ||
nodeType: 'ForOfStatement', | ||
test: (n: estree.ForOfStatement) => n.await, | ||
}, | ||
// https://github.com/estree/estree/blob/master/es2018.md#expressions | ||
{ | ||
name: '[es2018] object spread properties', | ||
nodeType: 'ObjectExpression', | ||
test: (n: estree.ObjectExpression) => n.properties.some(p => p.type === 'SpreadElement'), | ||
}, | ||
// https://github.com/estree/estree/blob/master/es2018.md#template-literals | ||
{ | ||
name: '[es2018] tagged template literal with invalid escape', | ||
nodeType: 'TemplateElement', | ||
test: (n: estree.TemplateElement) => n.value.cooked === null, | ||
}, | ||
// https://github.com/estree/estree/blob/master/es2018.md#patterns | ||
{ | ||
name: '[es2018] rest properties', | ||
nodeType: 'ObjectPattern', | ||
test: (n: estree.ObjectPattern) => n.properties.some(p => p.type === 'RestElement'), | ||
}, | ||
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/** | ||
* es2019 | ||
*/ | ||
// https://github.com/estree/estree/blob/master/es2019.md#catchclause | ||
{ | ||
name: '[es2019] catch clause without a binding', | ||
nodeType: 'CatchClause', | ||
test: (n: estree.CatchClause) => !n.param, | ||
}, | ||
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/** | ||
* es2020 | ||
*/ | ||
// https://github.com/estree/estree/blob/master/es2020.md#bigintliteral | ||
{ | ||
name: '[es2020] bigint literal', | ||
nodeType: 'Literal', | ||
test: (n: estree.Literal) => typeof n.value === 'bigint', | ||
}, | ||
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/** | ||
* webpack transforms import/export in order to support tree shaking and async imports | ||
* | ||
* // https://github.com/estree/estree/blob/master/es2020.md#importexpression | ||
* { | ||
* name: '[es2020] import expression', | ||
* nodeType: 'ImportExpression', | ||
* }, | ||
* // https://github.com/estree/estree/blob/master/es2020.md#exportalldeclaration | ||
* { | ||
* name: '[es2020] export all declaration', | ||
* nodeType: 'ExportAllDeclaration', | ||
* }, | ||
* | ||
*/ | ||
]; | ||
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export const checksByNodeType = new Map<estree.Node['type'], DisallowedSyntaxCheck[]>(); | ||
for (const check of checks) { | ||
const nodeTypes = Array.isArray(check.nodeType) ? check.nodeType : [check.nodeType]; | ||
for (const nodeType of nodeTypes) { | ||
if (!checksByNodeType.has(nodeType)) { | ||
checksByNodeType.set(nodeType, []); | ||
} | ||
checksByNodeType.get(nodeType)!.push(check); | ||
} | ||
} |
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