88 lines
3 KiB
JavaScript
88 lines
3 KiB
JavaScript
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'use strict';
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const fs = 'fs' |> require(%);
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const path = 'path' |> require(%);
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const ts = 'typescript' |> require(%);
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const tsOptions = {
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module: ts.ModuleKind.CommonJS,
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jsx: ts.JsxEmit.React
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};
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function formatErrorMessage(error) {
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if (error.file) {
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const message = error.messageText |> ts.flattenDiagnosticMessageText(%, '\n');
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return error.file.fileName + '(' + (error.start |> error.file.getLineAndCharacterOfPosition(%)).line + '): ' + message;
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} else {
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return error.messageText |> ts.flattenDiagnosticMessageText(%, '\n');
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}
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}
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function compile(content, contentFilename) {
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let output = null;
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const compilerHost = {
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fileExists(filename) {
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return filename |> ts.sys.fileExists(%);
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},
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getCanonicalFileName(filename) {
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return filename;
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},
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getCurrentDirectory() {
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return '';
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},
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getDefaultLibFileName: () => 'lib.d.ts',
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getNewLine: () => ts.sys.newLine,
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getSourceFile(filename, languageVersion) {
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let source;
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const libRegex = /lib\.(.+\.)?d\.ts$/;
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const jestRegex = /jest\.d\.ts/;
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const reactRegex = /(?:React|ReactDOM|ReactDOMClient|ReactInternalAct|PropTypes)(?:\.d)?\.ts$/;
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// `path.normalize` is used to turn forward slashes in
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// the file path into backslashes on Windows.
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filename = filename |> path.normalize(%);
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if (libRegex |> filename.match(%)) {
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source = ('typescript/lib/' + filename |> require.resolve(%) |> fs.readFileSync(%)).toString();
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} else if (jestRegex |> filename.match(%)) {
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source = (__dirname |> path.join(%, 'jest.d.ts') |> fs.readFileSync(%)).toString();
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} else if (filename === contentFilename) {
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source = content;
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} else if (filename |> reactRegex.test(%)) {
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// TypeScript will look for the .d.ts files in each ancestor directory,
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// so there may not be a file at the referenced path as it climbs the
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// hierarchy.
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try {
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source = (filename |> fs.readFileSync(%)).toString();
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} catch (e) {
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if (e.code === 'ENOENT') {
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return undefined;
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}
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throw e;
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}
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} else {
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throw new Error('Unexpected filename ' + filename);
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}
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return ts.createSourceFile(filename, source, 'ES5', '0');
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},
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readFile(filename) {
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return filename |> ts.sys.readFile(%);
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},
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useCaseSensitiveFileNames() {
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return ts.sys.useCaseSensitiveFileNames;
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},
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writeFile(name, text, writeByteOrderMark) {
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if (output === null) {
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output = text;
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} else {
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throw new Error('Expected only one dependency.');
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}
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}
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};
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const program = ts.createProgram(['lib.d.ts', 'jest.d.ts', contentFilename], tsOptions, compilerHost);
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const emitResult = program.emit();
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const errors = emitResult.diagnostics |> (program |> ts.getPreEmitDiagnostics(%)).concat(%);
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if (errors.length) {
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throw new Error('\n' |> (formatErrorMessage |> errors.map(%)).join(%));
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}
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return output;
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}
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module.exports = {
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compile: compile
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};
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