javascript-typescript-langserver/lib/diagnostics.js

Implementation of the Language Server Protocol for JavaScript and TypeScript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const ts = require("typescript");
const vscode_languageserver_1 = require("vscode-languageserver");
/**
 * Converts a TypeScript Diagnostic to an LSP Diagnostic
 */
function convertTsDiagnostic(diagnostic) {
    const text = ts.flattenDiagnosticMessageText(diagnostic.messageText, '\n');
    let range = { start: { character: 0, line: 0 }, end: { character: 0, line: 0 } };
    if (diagnostic.file && diagnostic.start && diagnostic.length) {
        range = {
            start: diagnostic.file.getLineAndCharacterOfPosition(diagnostic.start),
            end: diagnostic.file.getLineAndCharacterOfPosition(diagnostic.start + diagnostic.length),
        };
    }
    return {
        range,
        message: text,
        severity: convertDiagnosticCategory(diagnostic.category),
        code: diagnostic.code,
        source: diagnostic.source || 'ts',
    };
}
exports.convertTsDiagnostic = convertTsDiagnostic;
/**
 * Converts a diagnostic category to an LSP DiagnosticSeverity
 *
 * @param category The Typescript DiagnosticCategory
 */
function convertDiagnosticCategory(category) {
    switch (category) {
        case ts.DiagnosticCategory.Error:
            return vscode_languageserver_1.DiagnosticSeverity.Error;
        case ts.DiagnosticCategory.Warning:
            return vscode_languageserver_1.DiagnosticSeverity.Warning;
        case ts.DiagnosticCategory.Message:
            return vscode_languageserver_1.DiagnosticSeverity.Information;
        case ts.DiagnosticCategory.Suggestion:
            return vscode_languageserver_1.DiagnosticSeverity.Hint;
    }
}
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