next
Version:
The React Framework
71 lines (70 loc) • 2.6 kB
JavaScript
import fs from 'fs/promises';
import path from 'path';
import url from 'url';
import dataUriToBuffer from 'next/dist/compiled/data-uri-to-buffer';
import { getSourceMapUrl } from './get-source-map-url';
export async function getSourceMapFromFile(filename) {
filename = filename.startsWith('file://') ? url.fileURLToPath(filename) : filename;
let fileContents;
try {
fileContents = await fs.readFile(filename, 'utf-8');
} catch (error) {
throw Object.defineProperty(new Error("Failed to read file contents of " + filename + ".", {
cause: error
}), "__NEXT_ERROR_CODE", {
value: "E466",
enumerable: false,
configurable: true
});
}
const sourceUrl = getSourceMapUrl(fileContents);
if (!sourceUrl) {
return undefined;
}
if (sourceUrl.startsWith('data:')) {
let buffer;
try {
buffer = dataUriToBuffer(sourceUrl);
} catch (error) {
throw Object.defineProperty(new Error("Failed to parse source map URL for " + filename + ".", {
cause: error
}), "__NEXT_ERROR_CODE", {
value: "E199",
enumerable: false,
configurable: true
});
}
if (buffer.type !== 'application/json') {
throw Object.defineProperty(new Error("Unknown source map type for " + filename + ": " + buffer.typeFull + "."), "__NEXT_ERROR_CODE", {
value: "E113",
enumerable: false,
configurable: true
});
}
try {
return JSON.parse(buffer.toString());
} catch (error) {
throw Object.defineProperty(new Error("Failed to parse source map for " + filename + ".", {
cause: error
}), "__NEXT_ERROR_CODE", {
value: "E318",
enumerable: false,
configurable: true
});
}
}
const sourceMapFilename = path.resolve(path.dirname(filename), decodeURIComponent(sourceUrl));
try {
const sourceMapContents = await fs.readFile(sourceMapFilename, 'utf-8');
return JSON.parse(sourceMapContents.toString());
} catch (error) {
throw Object.defineProperty(new Error("Failed to parse source map " + sourceMapFilename + ".", {
cause: error
}), "__NEXT_ERROR_CODE", {
value: "E220",
enumerable: false,
configurable: true
});
}
}
//# sourceMappingURL=get-source-map-from-file.js.map