| 40 | } |
| 41 | |
| 42 | export function getPackageInfo(options) { |
| 43 | const { |
| 44 | cache, |
| 45 | extensions, |
| 46 | pkg, |
| 47 | mainFields, |
| 48 | preserveSymlinks, |
| 49 | useBrowserOverrides, |
| 50 | rootDir, |
| 51 | ignoreSideEffectsForRoot |
| 52 | } = options; |
| 53 | let { pkgPath } = options; |
| 54 | |
| 55 | if (cache.has(pkgPath)) { |
| 56 | return cache.get(pkgPath); |
| 57 | } |
| 58 | |
| 59 | // browserify/resolve doesn't realpath paths returned in its packageFilter callback |
| 60 | if (!preserveSymlinks) { |
| 61 | pkgPath = realpathSync(pkgPath); |
| 62 | } |
| 63 | |
| 64 | const pkgRoot = dirname(pkgPath); |
| 65 | |
| 66 | const packageInfo = { |
| 67 | // copy as we are about to munge the `main` field of `pkg`. |
| 68 | packageJson: { ...pkg }, |
| 69 | |
| 70 | // path to package.json file |
| 71 | packageJsonPath: pkgPath, |
| 72 | |
| 73 | // directory containing the package.json |
| 74 | root: pkgRoot, |
| 75 | |
| 76 | // which main field was used during resolution of this module (main, module, or browser) |
| 77 | resolvedMainField: 'main', |
| 78 | |
| 79 | // whether the browser map was used to resolve the entry point to this module |
| 80 | browserMappedMain: false, |
| 81 | |
| 82 | // the entry point of the module with respect to the selected main field and any |
| 83 | // relevant browser mappings. |
| 84 | resolvedEntryPoint: '' |
| 85 | }; |
| 86 | |
| 87 | let overriddenMain = false; |
| 88 | for (let i = 0; i < mainFields.length; i++) { |
| 89 | const field = mainFields[i]; |
| 90 | if (typeof pkg[field] === 'string') { |
| 91 | pkg.main = pkg[field]; |
| 92 | packageInfo.resolvedMainField = field; |
| 93 | overriddenMain = true; |
| 94 | break; |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | const internalPackageInfo = { |
| 99 | cachedPkg: pkg, |