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feat: Add eslint to sentry-javascript (#2786)
This PR adds an initial implementation of an eslint-config to the mono-repo. It also adds a eslint-plugin-sentry-sdks, a local npm package we use to write our own custom eslint rules, and converts @sentry/browser from eslint to tslint.
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‎.eslintignore‎

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# THIS IS A TEMPORARY FILE
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# THIS WILL BE REMOVED AFTER WE FINISH ESLINT UPGRADE
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packages/apm/**/*
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packages/core/**/*
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packages/ember/**/*
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packages/gatsby/**/*
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packages/hub/**/*
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packages/integrations/**/*
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packages/minimal/**/*
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packages/node/**/*
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packages/react/**/*
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packages/tracing/**/*
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packages/types/**/*
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packages/typescript/**/*
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packages/utils/**/*

‎.eslintrc.js‎

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module.exports = {
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root: true,
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env: {
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node: true,
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},
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extends: ['prettier', 'eslint:recommended'],
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plugins: ['sentry-sdk', 'jsdoc'],
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ignorePatterns: ['eslint-plugin-sentry-sdk'],
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overrides: [
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{
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// Configuration for JavaScript files
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files: ['*.js'],
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rules: {
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'no-unused-vars': ['error', { argsIgnorePattern: '^_' }],
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},
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},
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{
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// Configuration for typescript files
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files: ['*.ts', '*.tsx', '*.d.ts'],
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extends: ['plugin:@typescript-eslint/recommended', 'prettier/@typescript-eslint'],
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plugins: ['@typescript-eslint'],
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parser: '@typescript-eslint/parser',
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parserOptions: {
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project: './tsconfig.json',
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},
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rules: {
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// Unused variables should be removed unless they are marked with and underscore (ex. _varName).
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'@typescript-eslint/no-unused-vars': ['warn', { argsIgnorePattern: '^_' }],
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// Make sure that all ts-ignore comments are given a description.
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'@typescript-eslint/ban-ts-comment': [
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'warn',
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{
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'ts-ignore': 'allow-with-description',
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},
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],
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// Types usage should be explicit as possible, so we prevent usage of inferrable types.
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// This is especially important because we have a public API, so usage needs to be as
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// easy to understand as possible.
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'@typescript-eslint/no-inferrable-types': 'off',
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// Enforce type annotations to maintain consistency. This is especially important as
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// we have a public API, so we want changes to be very explicit.
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'@typescript-eslint/typedef': ['error', { arrowParameter: false }],
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'@typescript-eslint/explicit-function-return-type': 'error',
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// Consistent ordering of fields, methods and constructors for classes should be enforced
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'@typescript-eslint/member-ordering': 'error',
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// Enforce that unbound methods are called within an expected scope. As we frequently pass data between classes
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// in SDKs, we should make sure that we are correctly preserving class scope.
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'@typescript-eslint/unbound-method': 'error',
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// Private and protected members of a class should be prefixed with a leading underscore
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'@typescript-eslint/naming-convention': [
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'error',
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{
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selector: 'memberLike',
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modifiers: ['private'],
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format: ['camelCase'],
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leadingUnderscore: 'require',
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},
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{
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selector: 'memberLike',
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modifiers: ['protected'],
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format: ['camelCase'],
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leadingUnderscore: 'require',
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},
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],
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},
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},
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{
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// Configuration for files under src
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files: ['src/**/*'],
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rules: {
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// We want to prevent async await usage in our files to prevent uncessary bundle size.
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'sentry-sdk/no-async-await': 'error',
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// JSDOC comments are required for classes and methods. As we have a public facing codebase, documentation,
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// even if it may seems excessive at times, is important to emphasize. Turned off in tests.
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'jsdoc/require-jsdoc': [
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'error',
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{ require: { ClassDeclaration: true, MethodDefinition: true }, checkConstructors: false },
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],
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},
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},
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{
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// Configuration for test files
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env: {
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jest: true,
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},
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files: ['*.test.ts', '*.test.tsx', '*.test.js', '*.test.jsx'],
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rules: {
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'max-lines': 'off',
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},
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},
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{
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// Configuration for config files like webpack/rollback
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files: ['*.config.js'],
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parserOptions: {
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sourceType: 'module',
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ecmaVersion: 2018,
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},
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},
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],
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rules: {
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// We want to prevent usage of unary operators outside of for loops
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'no-plusplus': ['error', { allowForLoopAfterthoughts: true }],
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// Disallow usage of console and alert
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'no-console': 'error',
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'no-alert': 'error',
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// Prevent reassignment of function parameters, but still allow object properties to be
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// reassigned. We want to enforce immutability when possible, but we shouldn't sacrifice
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// too much efficiency
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'no-param-reassign': ['error', { props: false }],
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// Prefer use of template expression over string literal concatenation
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'prefer-template': 'error',
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// Limit maximum file size to reduce complexity. Turned off in tests.
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'max-lines': 'error',
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},
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};

‎.vscode/extensions.json‎

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{
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// See http://go.microsoft.com/fwlink/?LinkId=827846
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// for the documentation about the extensions.json format
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"recommendations": ["esbenp.prettier-vscode", "ms-vscode.vscode-typescript-tslint-plugin"]
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"recommendations": ["esbenp.prettier-vscode", "ms-vscode.vscode-typescript-tslint-plugin", "dbaeumer.vscode-eslint"]
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}

‎CHANGELOG.md‎

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- "You miss 100 percent of the chances you don't take. — Wayne Gretzky" — Michael Scott
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- [ember] feat: Add `@sentry/ember` (#2739)
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- [apm/tracing] fix: Mark side effects for tracing hub extensions (#2788)
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- [browser] ref: Use stronger function return typings (#2786)
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## 5.20.1
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‎dangerfile.ts‎

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import { resolve } from 'path';
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import tslint from 'danger-plugin-tslint';
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import { prettyResults } from 'danger-plugin-tslint/dist/prettyResults';
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import { CLIEngine } from 'eslint';
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const packages = ['apm', 'browser', 'core', 'hub', 'integrations', 'minimal', 'node', 'types', 'utils'];
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const PACKAGES = ['apm', 'core', 'hub', 'integrations', 'minimal', 'node', 'types', 'utils'];
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const EXTENSIONS = ['.js', '.jsx', '.ts', '.tsx'];
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export default async () => {
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/**
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* Eslint your code with Danger
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* Based on fork from: https://github.com/appcelerator/danger-plugin-eslint
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*/
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async function eslint(): Promise<void[]> {
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const allFiles = danger.git.created_files.concat(danger.git.modified_files);
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const cli = new CLIEngine({});
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// let eslint filter down to non-ignored, matching the extensions expected
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const filesToLint = allFiles.filter(f => !cli.isPathIgnored(f) && EXTENSIONS.some(ext => f.endsWith(ext)));
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return Promise.all(filesToLint.map(f => lintFile(cli, f)));
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}
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/** JSDoc */
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async function lintFile(linter: CLIEngine, path: string): Promise<void> {
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const contents = await danger.github.utils.fileContents(path);
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const report = linter.executeOnText(contents, path);
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if (report.results.length !== 0) {
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report.results[0].messages.map(msg => {
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if (msg.fatal) {
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fail(`Fatal error linting ${path} with eslint.`);
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return;
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}
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const noop = (): void => undefined;
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const fn = { 0: noop, 1: warn, 2: fail }[msg.severity];
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fn(`${path} line ${msg.line} – ${msg.message} (${msg.ruleId})`, path, msg.line);
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});
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}
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}
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export default async (): Promise<void> => {
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if (!danger.github) {
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return;
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}
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schedule(async () => {
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const tsLintResult = (await Promise.all(
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packages.map(packageName => {
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return new Promise<string>(res => {
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tslint({
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lintResultsJsonPath: resolve(__dirname, 'packages', packageName, 'lint-results.json'),
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handleResults: results => {
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if (results.length > 0) {
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const formattedResults = prettyResults(results);
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res(`TSLint failed: **@sentry/${packageName}**\n\n${formattedResults}`);
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} else {
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res('');
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}
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},
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const tsLintResult = (
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await Promise.all(
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PACKAGES.map(packageName => {
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return new Promise<string>(res => {
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tslint({
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lintResultsJsonPath: resolve(__dirname, 'packages', packageName, 'lint-results.json'),
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handleResults: results => {
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if (results.length > 0) {
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const formattedResults = prettyResults(results);
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res(`TSLint failed: **@sentry/${packageName}**\n\n${formattedResults}`);
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} else {
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res('');
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}
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},
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});
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});
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});
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}),
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)).filter(str => str.length);
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}),
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)
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).filter(str => str.length);
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if (tsLintResult.length) {
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tsLintResult.forEach(tsLintFail => {
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fail(`${tsLintFail}`);
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}
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});
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await eslint();
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const hasChangelog = danger.git.modified_files.indexOf('CHANGELOG.md') !== -1;
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const isTrivial = (danger.github.pr.body + danger.github.pr.title).includes('#trivial');
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‎eslint-plugin-sentry-sdk/index.js‎

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// This is a temporary file. It will be removed when we migrate
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// the eslint configs to another repo.
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'use strict';
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/**
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* Rule to disallow usage of async await
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* @author Abhijeet Prasad
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*/
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const noAsyncAwait = {
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meta: {
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type: 'problem',
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docs: {
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description: 'Disallow usage of async await',
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category: 'Best Practices',
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recommended: true,
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},
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fixable: null,
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schema: [],
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},
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create: function(context) {
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return {
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FunctionDeclaration(node) {
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if (node.async) {
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context.report({
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node,
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message:
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'Using async-await can add a lot to bundle size. Please do not use it outside of tests, use Promises instead',
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});
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}
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},
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ArrowFunctionExpression(node) {
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if (node.async) {
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context.report({
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node,
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message:
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'Using async-await can add a lot to bundle size. Please do not use it outside of tests, use Promises instead',
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});
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}
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},
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};
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},
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};
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module.exports = {
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rules: {
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'no-async-await': noAsyncAwait,
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},
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};

‎eslint-plugin-sentry-sdk/package.json‎

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{
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"name": "eslint-plugin-sentry-sdk",
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"version": "0.0.1",
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"main": "index.js",
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"devDependencies": {
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"eslint": "^7.5.0"
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},
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"engines": {
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"node": ">=0.10.0"
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}
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}

‎package.json‎

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"@types/mocha": "^5.2.0",
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"@types/node": "^11.13.7",
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"@types/sinon": "^7.0.11",
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"@typescript-eslint/eslint-plugin": "^3.7.1",
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"@typescript-eslint/parser": "^3.7.1",
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"chai": "^4.1.2",
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"codecov": "^3.6.5",
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"danger": "^7.1.3",
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"danger-plugin-eslint": "^0.1.0",
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"danger-plugin-tslint": "^2.0.0",
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"eslint": "^7.5.0",
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"eslint-config-prettier": "^6.11.0",
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"eslint-plugin-jsdoc": "^30.0.3",
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"eslint-plugin-sentry-sdk": "file:./eslint-plugin-sentry-sdk",
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"jest": "^24.7.1",
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"karma-browserstack-launcher": "^1.5.1",
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"karma-firefox-launcher": "^1.1.0",

‎packages/browser/.eslintrc.js‎

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module.exports = {
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root: true,
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env: {
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es6: true,
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browser: true,
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},
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parserOptions: {
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ecmaVersion: 2018,
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},
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extends: ['../../.eslintrc.js'],
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ignorePatterns: ['build/**/*', 'dist/**/*', 'esm/**/*', 'examples/**/*', 'scripts/**/*', 'src/loader.js'],
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overrides: [
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{
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files: ['*.ts', '*.tsx', '*.d.ts'],
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parserOptions: {
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project: './tsconfig.json',
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},
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},
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{
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files: ['test/**/*'],
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rules: {
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'jsdoc/require-jsdoc': 'off',
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'no-console': 'off',
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'max-lines': 'off',
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'prefer-template': 'off',
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},
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},
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{
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files: ['test/integration/**/*'],
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env: {
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mocha: true,
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},
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rules: {
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'no-undef': 'off',
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},
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},
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{
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files: ['test/integration/common/**/*', 'test/integration/suites/**/*'],
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rules: {
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'no-unused-vars': 'off',
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},
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},
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],
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rules: {
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'no-prototype-builtins': 'off',
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},
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};

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