@typed/test/lib.es2015/typescript/diagnosticToString.js

Testing made simple.

import { join } from 'path';
import { flattenDiagnosticMessageText } from 'typescript';
export function diagnosticsToString(diagnostics, basePath) {
    return diagnostics.map(x => diagnosticToString(x, basePath)).join(`\n`);
}
export function diagnosticToString(diagnostic, basePath) {
    if (diagnostic.file) {
        const { line, character } = diagnostic.file.getLineAndCharacterOfPosition(diagnostic.start);
        const message = flattenDiagnosticMessageText(diagnostic.messageText, '\n');
        return (`${join(basePath, diagnostic.file.fileName)} (${line + 1},${character + 1}):` +
            `\n  ${message}`);
    }
    return `${flattenDiagnosticMessageText(diagnostic.messageText, '\n')}`;
}
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