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Apr 27, 2020
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1 change: 1 addition & 0 deletions .eslintrc.js
Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,7 @@ module.exports = {
"@typescript-eslint/no-unsafe-return": "off",
"@typescript-eslint/no-untyped-public-signature": "off",
"@typescript-eslint/no-unused-vars": "off",
"@typescript-eslint/no-unused-vars-experimental": "off",
"@typescript-eslint/no-use-before-define": "off",
"@typescript-eslint/prefer-readonly-parameter-types": "off",
"@typescript-eslint/prefer-reduce-type-parameter": "off",
Expand Down
18 changes: 15 additions & 3 deletions src/cli/main.ts
Original file line number Diff line number Diff line change
Expand Up @@ -44,7 +44,14 @@ import { findTSLintConfiguration } from "../input/findTSLintConfiguration";
import { findTypeScriptConfiguration } from "../input/findTypeScriptConfiguration";
import { importer, ImporterDependencies } from "../input/importer";
import { mergeLintConfigurations } from "../input/mergeLintConfigurations";
import { choosePackageManager } from "../reporting/packages/choosePackageManager";
import {
ChoosePackageManagerDependencies,
choosePackageManager,
} from "../reporting/packages/choosePackageManager";
import {
logMissingPackages,
LogMissingPackagesDependencies,
} from "../reporting/packages/logMissingPackages";
import {
reportConversionResults,
ReportConversionResultsDependencies,
Expand Down Expand Up @@ -90,15 +97,19 @@ const findOriginalConfigurationsDependencies: FindOriginalConfigurationsDependen
mergeLintConfigurations,
};

const choosePackageManagerDependencies = {
const choosePackageManagerDependencies: ChoosePackageManagerDependencies = {
fileSystem: fsFileSystem,
};

const reportConversionResultsDependencies: ReportConversionResultsDependencies = {
const logMissingPackagesDependencies: LogMissingPackagesDependencies = {
choosePackageManager: bind(choosePackageManager, choosePackageManagerDependencies),
logger: processLogger,
};

const reportConversionResultsDependencies: ReportConversionResultsDependencies = {
logger: processLogger,
};

const retrieveExtendsValuesDependencies: RetrieveExtendsValuesDependencies = {
importer: boundImporter,
};
Expand Down Expand Up @@ -132,6 +143,7 @@ const convertConfigDependencies: ConvertConfigDependencies = {
findOriginalConfigurations,
findOriginalConfigurationsDependencies,
),
logMissingPackages: bind(logMissingPackages, logMissingPackagesDependencies),
reportConversionResults: bind(reportConversionResults, reportConversionResultsDependencies),
simplifyPackageRules: bind(simplifyPackageRules, simplifyPackageRulesDependencies),
writeConversionResults: bind(writeConversionResults, writeConversionResultsDependencies),
Expand Down
1 change: 1 addition & 0 deletions src/conversion/convertConfig.test.ts
Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,7 @@ const createStubDependencies = (
missing: [],
plugins: new Set(),
}),
logMissingPackages: jest.fn().mockReturnValue(Promise.resolve()),
writeConversionResults: jest.fn().mockReturnValue(Promise.resolve()),
...overrides,
});
Expand Down
6 changes: 6 additions & 0 deletions src/conversion/convertConfig.ts
Original file line number Diff line number Diff line change
Expand Up @@ -2,13 +2,15 @@ import { SansDependencies } from "../binding";
import { simplifyPackageRules } from "../creation/simplification/simplifyPackageRules";
import { writeConversionResults } from "../creation/writeConversionResults";
import { findOriginalConfigurations } from "../input/findOriginalConfigurations";
import { logMissingPackages } from "../reporting/packages/logMissingPackages";
import { reportConversionResults } from "../reporting/reportConversionResults";
import { convertRules } from "../rules/convertRules";
import { ResultStatus, ResultWithStatus, TSLintToESLintSettings } from "../types";

export type ConvertConfigDependencies = {
convertRules: SansDependencies<typeof convertRules>;
findOriginalConfigurations: SansDependencies<typeof findOriginalConfigurations>;
logMissingPackages: SansDependencies<typeof logMissingPackages>;
reportConversionResults: SansDependencies<typeof reportConversionResults>;
simplifyPackageRules: SansDependencies<typeof simplifyPackageRules>;
writeConversionResults: SansDependencies<typeof writeConversionResults>;
Expand Down Expand Up @@ -56,6 +58,10 @@ export const convertConfig = async (

// 5. A summary of the results is printed to the user's console
await dependencies.reportConversionResults(settings.config, simplifiedConfiguration);
await dependencies.logMissingPackages(
simplifiedConfiguration,
originalConfigurations.data.packages,
);

return {
status: ResultStatus.Succeeded,
Expand Down
5 changes: 4 additions & 1 deletion src/creation/simplification/simplifyPackageRules.test.ts
Original file line number Diff line number Diff line change
Expand Up @@ -68,7 +68,10 @@ describe("simplifyPackageRules", () => {
expect(simplifiedResults).toEqual({
...ruleConversionResults,
converted: undefined,
extends: ["eslint-config-prettier", "eslint-config-prettier/@typescript-eslint"],
extends: [
"plugin:eslint-config-prettier",
"plugin:eslint-config-prettier/@typescript-eslint",
],
});
});

Expand Down
5 changes: 4 additions & 1 deletion src/creation/simplification/simplifyPackageRules.ts
Original file line number Diff line number Diff line change
Expand Up @@ -36,7 +36,10 @@ export const simplifyPackageRules = async (

// 3a. If no output rules conflict with `eslint-config-prettier`, it's added in
if (await dependencies.addPrettierExtensions(ruleConversionResults, prettierRequested)) {
allExtensions.push("eslint-config-prettier", "eslint-config-prettier/@typescript-eslint");
allExtensions.push(
"plugin:eslint-config-prettier",
"plugin:eslint-config-prettier/@typescript-eslint",
);
}

if (allExtensions.length === 0) {
Expand Down
15 changes: 2 additions & 13 deletions src/input/findPackagesConfiguration.ts
Original file line number Diff line number Diff line change
Expand Up @@ -4,17 +4,8 @@ import {
} from "./findReportedConfiguration";

export type PackagesConfiguration = {
dependencies: {
[i: string]: string;
};
devDependencies: {
[i: string]: string;
};
};

const defaultPackagesConfiguration = {
dependencies: {},
devDependencies: {},
dependencies: Record<string, string>;
devDependencies: Record<string, string>;
};

export const findPackagesConfiguration = async (
Expand All @@ -32,11 +23,9 @@ export const findPackagesConfiguration = async (
: {
dependencies: {
...rawConfiguration.dependencies,
...defaultPackagesConfiguration.dependencies,
},
devDependencies: {
...rawConfiguration.devDependencies,
...defaultPackagesConfiguration.devDependencies,
Copy link
Member Author

Choose a reason for hiding this comment

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I don't remember why this was added before, but it isn't doing anything... 🤷

},
};
};
175 changes: 175 additions & 0 deletions src/reporting/packages/logMissingPackages.test.ts
Original file line number Diff line number Diff line change
@@ -0,0 +1,175 @@
import { createStubLogger, expectEqualWrites } from "../../adapters/logger.stubs";
import { createEmptyConversionResults } from "../../conversion/conversionResults.stubs";
import { logMissingPackages } from "./logMissingPackages";
import { PackageManager } from "./packageManagers";

const createStubDependencies = (packageManager = PackageManager.npm) => ({
choosePackageManager: async () => packageManager,
logger: createStubLogger(),
});

describe("logMissingPackages", () => {
it("reports a singular message when one package is missing", async () => {
// Arrange
const { choosePackageManager, logger } = createStubDependencies(PackageManager.npm);
const ruleConversionResults = createEmptyConversionResults();

// Act
await logMissingPackages({ choosePackageManager, logger }, ruleConversionResults, {
dependencies: {
"@typescript-eslint/eslint-plugin": "*",
"@typescript-eslint/parser": "*",
},
devDependencies: {},
});

// Assert
expectEqualWrites(
logger.stdout.write,
`⚡ 1 new package is required for this ESLint configuration. ⚡`,
` npm install eslint --save-dev`,
);
});

it("does not include eslint-config-prettier when there are no extensions", async () => {
// Arrange
const { choosePackageManager, logger } = createStubDependencies();
const ruleConversionResults = createEmptyConversionResults({
extends: undefined,
});

// Act
await logMissingPackages({ choosePackageManager, logger }, ruleConversionResults);

// Assert
expectEqualWrites(
logger.stdout.write,
`⚡ 3 new packages are required for this ESLint configuration. ⚡`,
` npm install @typescript-eslint/eslint-plugin @typescript-eslint/parser eslint --save-dev`,
);
});

it("does not include eslint-config-prettier when extensions don't include eslint-config-prettier", async () => {
// Arrange
const { choosePackageManager, logger } = createStubDependencies();
const ruleConversionResults = createEmptyConversionResults({
extends: [],
});

// Act
await logMissingPackages({ choosePackageManager, logger }, ruleConversionResults);

// Assert
expectEqualWrites(
logger.stdout.write,
`⚡ 3 new packages are required for this ESLint configuration. ⚡`,
` npm install @typescript-eslint/eslint-plugin @typescript-eslint/parser eslint --save-dev`,
);
});

it("includes eslint-config-prettier when extensions include eslint-config-prettier", async () => {
// Arrange
const { choosePackageManager, logger } = createStubDependencies();
const ruleConversionResults = createEmptyConversionResults({
extends: ["plugin:eslint-config-prettier"],
});

// Act
await logMissingPackages({ choosePackageManager, logger }, ruleConversionResults);

// Assert
expectEqualWrites(
logger.stdout.write,
`⚡ 4 new packages are required for this ESLint configuration. ⚡`,
` npm install @typescript-eslint/eslint-plugin @typescript-eslint/parser eslint eslint-config-prettier --save-dev`,
);
});

it("includes @typescript-eslint/eslint-plugin-tslint when there are missing conversions", async () => {
// Arrange
const { choosePackageManager, logger } = createStubDependencies();
const ruleConversionResults = createEmptyConversionResults({
missing: [
{
ruleArguments: [],
ruleName: "missing-rule",
ruleSeverity: "error",
},
],
});

// Act
await logMissingPackages({ choosePackageManager, logger }, ruleConversionResults);

// Assert
expectEqualWrites(
logger.stdout.write,
`⚡ 4 new packages are required for this ESLint configuration. ⚡`,
` npm install @typescript-eslint/eslint-plugin @typescript-eslint/eslint-plugin-tslint @typescript-eslint/parser eslint --save-dev`,
);
});

it("reports an npm command when the package manager is npm", async () => {
// Arrange
const { choosePackageManager, logger } = createStubDependencies(PackageManager.npm);
const ruleConversionResults = createEmptyConversionResults();

// Act
await logMissingPackages({ choosePackageManager, logger }, ruleConversionResults);

// Assert
expectEqualWrites(
logger.stdout.write,
`⚡ 3 new packages are required for this ESLint configuration. ⚡`,
` npm install @typescript-eslint/eslint-plugin @typescript-eslint/parser eslint --save-dev`,
);
});

it("reports a pnpm command when the package manager is pnpm", async () => {
// Arrange
const { choosePackageManager, logger } = createStubDependencies(PackageManager.pnpm);
const ruleConversionResults = createEmptyConversionResults();

// Act
await logMissingPackages({ choosePackageManager, logger }, ruleConversionResults);

// Assert
expectEqualWrites(
logger.stdout.write,
`⚡ 3 new packages are required for this ESLint configuration. ⚡`,
` pnpm add @typescript-eslint/eslint-plugin @typescript-eslint/parser eslint --save-dev`,
);
});

it("reports a Yarn command when the package manager is Yarn", async () => {
// Arrange
const { choosePackageManager, logger } = createStubDependencies(PackageManager.Yarn);
const ruleConversionResults = createEmptyConversionResults();

// Act
await logMissingPackages({ choosePackageManager, logger }, ruleConversionResults);

// Assert
expectEqualWrites(
logger.stdout.write,
`⚡ 3 new packages are required for this ESLint configuration. ⚡`,
` yarn add @typescript-eslint/eslint-plugin @typescript-eslint/parser eslint --dev`,
);
});

it("reports a Yarn command when the package manager is Yarn", async () => {
// Arrange
const { choosePackageManager, logger } = createStubDependencies(PackageManager.Yarn);
const ruleConversionResults = createEmptyConversionResults();

// Act
await logMissingPackages({ choosePackageManager, logger }, ruleConversionResults);

// Assert
expectEqualWrites(
logger.stdout.write,
`⚡ 3 new packages are required for this ESLint configuration. ⚡`,
` yarn add @typescript-eslint/eslint-plugin @typescript-eslint/parser eslint --dev`,
);
});
});
57 changes: 57 additions & 0 deletions src/reporting/packages/logMissingPackages.ts
Original file line number Diff line number Diff line change
@@ -0,0 +1,57 @@
import chalk from "chalk";
import { EOL } from "os";

import { Logger } from "../../adapters/logger";
import { SansDependencies } from "../../binding";
import { SimplifiedResultsConfiguration } from "../../creation/simplification/simplifyPackageRules";
import { PackagesConfiguration } from "../../input/findPackagesConfiguration";
import { isTruthy } from "../../utils";
import { installationMessages } from "../packages/packageManagers";
import { choosePackageManager } from "./choosePackageManager";

export type LogMissingPackagesDependencies = {
choosePackageManager: SansDependencies<typeof choosePackageManager>;
logger: Logger;
};

export const logMissingPackages = async (
dependencies: LogMissingPackagesDependencies,
ruleConversionResults: Pick<SimplifiedResultsConfiguration, "extends" | "missing" | "plugins">,
packageConfiguration?: PackagesConfiguration,
) => {
const packageManager = await dependencies.choosePackageManager();

const existingPackageNames = new Set([
...Object.keys(packageConfiguration?.dependencies ?? {}),
...Object.keys(packageConfiguration?.devDependencies ?? {}),
]);

const requiredPackageNames = [
"@typescript-eslint/eslint-plugin",
"@typescript-eslint/parser",
ruleConversionResults.extends?.join("").includes("eslint-config-prettier") &&
"eslint-config-prettier",
ruleConversionResults.missing.length !== 0 && "@typescript-eslint/eslint-plugin-tslint",
"eslint",
...Array.from(ruleConversionResults.plugins),
].filter(isTruthy);

const missingPackageNames = requiredPackageNames
.filter((packageName) => !existingPackageNames.has(packageName))
.sort();

dependencies.logger.stdout.write(chalk.cyanBright(`${EOL}⚡ ${missingPackageNames.length}`));
dependencies.logger.stdout.write(
chalk.cyan(
` new package${
missingPackageNames.length === 1 ? " is" : "s are"
} required for this ESLint configuration.`,
),
);
dependencies.logger.stdout.write(chalk.cyanBright(" ⚡"));
dependencies.logger.stdout.write(`${EOL} `);
dependencies.logger.stdout.write(
chalk.cyan(installationMessages[packageManager](missingPackageNames.join(" "))),
);
dependencies.logger.stdout.write(EOL);
};
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