Lint source code with ESLint

org.openrewrite.codemods.ESLint

_Run ESLint across the code to fix common static analysis issues in the code.

This requires the code to have an existing ESLint configuration._

Recipe source

GitHub, Issue Tracker, Maven Central

• groupId: org.openrewrite.recipe

• artifactId: rewrite-codemods

• version: 0.2.0

Options

Type	Name	Description	Example
List	patterns	Optional. The lint target files. This can contain any of file paths, directory paths, and glob patterns.	lib/**/*.js
String	parser	Optional. Parser used by ESLint to parse the source files. Defaults to @typescript-eslint/parser. See ESLint documentation for more details.	esprima
List	parserOptions	Optional. A list of parser options for ESLint. The format is key: value. Defaults to ecmaVersion: "latest", ecmaFeatures: { jsx: true }, sourceType: "module". See ESLint documentation for more details.	ecmaVersion: 6, ecmaFeatures: { jsx: true }
Boolean	allowInlineConfig	Optional. Whether inline config comments are allowed. Defaults to false. See ESLint documentation for more details.	true
List	envs	Optional. A list of env mappings for ESLint. The format is key: value.	browser: true
List	globals	Optional. Define global variables for rules that require knowledge of these.	var1, var2: writable
List	plugins	Optional. A list of plugins for ESLint.	@typescript-eslint, prettier
List	extend	Optional. A list of extends for ESLint.	eslint:recommended, prettier
List	rules	Optional. List of rules to be checked by ESLint. Optionally, the severity and other rule options can also be specified as e.g. off, warn or ["error", "always"]. The severity off is useful when the rule is declared by an extended shareable config. For more information, see the ESLint documentation	eqeqeq: warn, multiline-comment-style: ["error", "starred-block"], prettier/prettier
Boolean	fix	Optional. Automatically fix violations when possible. Defaults to true.	false
String	configFile	Optional. Allows specifying the full ESLint configuration file contents as multiline JSON. See ESLint documentation for more details. Note that this will override any other configuration options.

Usage

This recipe has no required configuration options. It can be activated by adding a dependency on org.openrewrite.recipe:rewrite-codemods:0.2.0 in your build file or by running a shell command (in which case no build changes are needed):

Gradle

1. Add the following to your build.gradle file:

build.gradle

plugins {
    id("org.openrewrite.rewrite") version("6.23.3")
}

rewrite {
    activeRecipe("org.openrewrite.codemods.ESLint")
    exportDatatables = true
}

repositories {
    mavenCentral()
}

dependencies {
    rewrite("org.openrewrite.recipe:rewrite-codemods:0.2.0")
}

2. Run gradle rewriteRun to run the recipe.

Gradle init script

1. Create a file named init.gradle in the root of your project.

init.gradle

initscript {
    repositories {
        maven { url "https://plugins.gradle.org/m2" }
    }
    dependencies { classpath("org.openrewrite:plugin:6.23.3") }
}
rootProject {
    plugins.apply(org.openrewrite.gradle.RewritePlugin)
    dependencies {
        rewrite("org.openrewrite.recipe:rewrite-codemods:0.2.0")
    }
    rewrite {
        activeRecipe("org.openrewrite.codemods.ESLint")
        exportDatatables = true
    }
    afterEvaluate {
        if (repositories.isEmpty()) {
            repositories {
                mavenCentral()
            }
        }
    }
}

2. Run the recipe.

shell

gradle --init-script init.gradle rewriteRun

Maven POM

1. Add the following to your pom.xml file:

pom.xml

<project>
  <build>
    <plugins>
      <plugin>
        <groupId>org.openrewrite.maven</groupId>
        <artifactId>rewrite-maven-plugin</artifactId>
        <version>5.40.2</version>
        <configuration>
          <exportDatatables>true</exportDatatables>
          <activeRecipes>
            <recipe>org.openrewrite.codemods.ESLint</recipe>
          </activeRecipes>
        </configuration>
        <dependencies>
          <dependency>
            <groupId>org.openrewrite.recipe</groupId>
            <artifactId>rewrite-codemods</artifactId>
            <version>0.2.0</version>
          </dependency>
        </dependencies>
      </plugin>
    </plugins>
  </build>
</project>

2. Run mvn rewrite:run to run the recipe.

Maven Command Line

You will need to have Maven installed on your machine before you can run the following command.

shell

mvn -U org.openrewrite.maven:rewrite-maven-plugin:run -Drewrite.recipeArtifactCoordinates=org.openrewrite.recipe:rewrite-codemods:RELEASE -Drewrite.activeRecipes=org.openrewrite.codemods.ESLint -Drewrite.exportDatatables=true

Moderne CLI

You will need to have configured the Moderne CLI on your machine before you can run the following command.

shell

mod run . --recipe ESLint

See how this recipe works across multiple open-source repositories

The community edition of the Moderne platform enables you to easily run recipes across thousands of open-source repositories.

Please contact Moderne for more information about safely running the recipes on your own codebase in a private SaaS.

Data Tables

ESLint messages

org.openrewrite.codemods.ESLintMessages

Errors and warnings as reported by ESLint.

Column Name	Description
Source Path	The source path of the file.
Rule ID	ESLint Rule ID.
Severity	Either Warning or Error.
Fatal	Is this a fatal error (like a parse error).
Message	The message created by the rule.
Line	Line in source file this message pertains to.
Column	Column in source file this message pertains to.

Source files that had results

org.openrewrite.table.SourcesFileResults

Source files that were modified by the recipe run.

Column Name	Description
Source path before the run	The source path of the file before the run. null when a source file was created during the run.
Source path after the run	A recipe may modify the source path. This is the path after the run. null when a source file was deleted during the run.
Parent of the recipe that made changes	In a hierarchical recipe, the parent of the recipe that made a change. Empty if this is the root of a hierarchy or if the recipe is not hierarchical at all.
Recipe that made changes	The specific recipe that made a change.
Estimated time saving	An estimated effort that a developer to fix manually instead of using this recipe, in unit of seconds.
Cycle	The recipe cycle in which the change was made.

Source files that errored on a recipe

org.openrewrite.table.SourcesFileErrors

The details of all errors produced by a recipe run.

Column Name	Description
Source path	The file that failed to parse.
Recipe that made changes	The specific recipe that made a change.
Stack trace	The stack trace of the failure.

Recipe performance

org.openrewrite.table.RecipeRunStats

Statistics used in analyzing the performance of recipes.

Column Name	Description
The recipe	The recipe whose stats are being measured both individually and cumulatively.
Source file count	The number of source files the recipe ran over.
Source file changed count	The number of source files which were changed in the recipe run. Includes files created, deleted, and edited.
Cumulative scanning time	The total time spent across the scanning phase of this recipe.
99th percentile scanning time	99 out of 100 scans completed in this amount of time.
Max scanning time	The max time scanning any one source file.
Cumulative edit time	The total time spent across the editing phase of this recipe.
99th percentile edit time	99 out of 100 edits completed in this amount of time.
Max edit time	The max time editing any one source file.