prettylint/lib/lint.js

Run Prettier as a linter

import { diagnose } from "./diagnose.js";
export function lint(result) {
    const nodeType = "Unknown";
    const ruleId = "prettier/prettier";
    if (result.type === "success") {
        const { input, output } = result;
        const diagnostics = diagnose(input, output);
        const messages = diagnostics.map(({ message, start: { line, column } }) => ({
            ruleId,
            severity: 1 /* LintSeverity.Warning */,
            line,
            column,
            message,
            nodeType,
        }));
        return {
            filePath: result.filename,
            source: input,
            ...(messages.length === 0 ? {} : { output }),
            messages,
            errorCount: 0,
            warningCount: messages.length,
        };
    }
    const { input, error } = result;
    const message = {
        ruleId,
        severity: 2 /* LintSeverity.Error */,
        nodeType,
        ...(error.loc
            ? // SyntaxError from parser in prettier
                {
                    line: error.loc.start.line,
                    column: error.loc.start.column,
                    message: error.message.split("\n", 1)[0], // cut the code-frame
                } /* c8 ignore start */
            : {
                line: 0,
                column: 0,
                message: typeof error?.message === "string" ? error.message : error,
            }) /* c8 ignore stop */,
    };
    return {
        filePath: result.filename,
        source: input,
        messages: [message],
        errorCount: 1,
        warningCount: 0,
    };
}