45 lines
2.0 KiB
JavaScript
Executable File
45 lines
2.0 KiB
JavaScript
Executable File
"use strict";
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/**
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* @license
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* Copyright Google LLC All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.dev/license
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*/
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.TsconfigParseError = void 0;
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exports.parseTsconfigFile = parseTsconfigFile;
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const ts = require("typescript");
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const virtual_host_1 = require("./virtual-host");
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const path_1 = require("path");
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const diagnostics_1 = require("./diagnostics");
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/** Code of the error raised by TypeScript when a tsconfig doesn't match any files. */
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const NO_INPUTS_ERROR_CODE = 18003;
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/** Class capturing a tsconfig parse error. */
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class TsconfigParseError extends Error {
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}
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exports.TsconfigParseError = TsconfigParseError;
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/**
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* Attempts to parse the specified tsconfig file.
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*
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* @throws {TsconfigParseError} If the tsconfig could not be read or parsed.
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*/
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function parseTsconfigFile(tsconfigPath, fileSystem) {
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if (!fileSystem.fileExists(tsconfigPath)) {
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throw new TsconfigParseError(`Tsconfig cannot not be read: ${tsconfigPath}`);
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}
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const { config, error } = ts.readConfigFile(tsconfigPath, p => fileSystem.read(fileSystem.resolve(p)));
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// If there is a config reading error, we never attempt to parse the config.
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if (error) {
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throw new TsconfigParseError((0, diagnostics_1.formatDiagnostics)([error], fileSystem));
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}
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const parsed = ts.parseJsonConfigFileContent(config, new virtual_host_1.FileSystemHost(fileSystem), (0, path_1.dirname)(tsconfigPath), {});
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// Skip the "No inputs found..." error since we don't want to interrupt the migration if a
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// tsconfig doesn't match a file. This will result in an empty `Program` which is still valid.
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const errors = parsed.errors.filter(diag => diag.code !== NO_INPUTS_ERROR_CODE);
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if (errors.length) {
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throw new TsconfigParseError((0, diagnostics_1.formatDiagnostics)(errors, fileSystem));
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}
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return parsed;
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}
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//# sourceMappingURL=parse-tsconfig.js.map
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