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compile.js
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compile.js
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"use strict";
const ts = require("typescript");
const fs = require("fs");
const path = require("path");
const process = require("process");
function getErrors(diagnostics) {
var errors = [];
diagnostics.forEach(diagnostic => {
let message = "Error";
if (diagnostic.file) {
const where = diagnostic.file.getLineAndCharacterOfPosition(diagnostic.start);
message += ' ' + diagnostic.file.fileName + ' ' + where.line + ', ' + where.character + 1;
}
message += ": " + ts.flattenDiagnosticMessageText(diagnostic.messageText, '\n');
errors.push(message);
});
return errors;
}
function readConfigFile(configFileName) {
// Read config file
const configFileText = fs.readFileSync(configFileName).toString();
// Parse JSON, after removing comments. Just fancier JSON.parse
const result = ts.parseConfigFileTextToJson(configFileName, configFileText);
const configObject = result.config;
if (!configObject) {
reportDiagnostics([result.error]);
process.exit(1);
}
// Extract config infromation
const configParseResult = ts.parseJsonConfigFileContent(configObject, ts.sys, path.dirname(configFileName));
if (configParseResult.errors.length > 0) {
reportDiagnostics(configParseResult.errors);
process.exit(1);
}
return configParseResult;
}
function compile(configFileName) {
// Extract configuration from config file
const config = readConfigFile(configFileName);
// Compile
const program = ts.createProgram(config.fileNames, config.options);
const emitResult = program.emit();
// Report errors
var errors = getErrors(ts.getPreEmitDiagnostics(program).concat(emitResult.diagnostics));
return errors;
}
module.exports = compile;