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68 lines
1.8 KiB
68 lines
1.8 KiB
'use strict'; |
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const resolve = require('resolve'); |
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const path = require('path'); |
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const log = require('debug')('eslint-plugin-import:resolver:node'); |
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exports.interfaceVersion = 2; |
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exports.resolve = function (source, file, config) { |
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log('Resolving:', source, 'from:', file); |
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let resolvedPath; |
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if (resolve.isCore(source)) { |
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log('resolved to core'); |
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return { found: true, path: null }; |
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} |
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try { |
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const cachedFilter = function (pkg, dir) { return packageFilter(pkg, dir, config); }; |
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resolvedPath = resolve.sync(source, opts(file, config, cachedFilter)); |
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log('Resolved to:', resolvedPath); |
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return { found: true, path: resolvedPath }; |
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} catch (err) { |
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log('resolve threw error:', err); |
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return { found: false }; |
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} |
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}; |
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function opts(file, config, packageFilter) { |
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return Object.assign({ |
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// more closely matches Node (#333) |
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// plus 'mjs' for native modules! (#939) |
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extensions: ['.mjs', '.js', '.json', '.node'], |
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}, |
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config, |
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{ |
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// path.resolve will handle paths relative to CWD |
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basedir: path.dirname(path.resolve(file)), |
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packageFilter, |
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}); |
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} |
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function identity(x) { return x; } |
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function packageFilter(pkg, dir, config) { |
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let found = false; |
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const file = path.join(dir, 'dummy.js'); |
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if (pkg.module) { |
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try { |
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resolve.sync(String(pkg.module).replace(/^(?:\.\/)?/, './'), opts(file, config, identity)); |
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pkg.main = pkg.module; |
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found = true; |
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} catch (err) { |
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log('resolve threw error trying to find pkg.module:', err); |
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} |
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} |
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if (!found && pkg['jsnext:main']) { |
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try { |
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resolve.sync(String(pkg['jsnext:main']).replace(/^(?:\.\/)?/, './'), opts(file, config, identity)); |
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pkg.main = pkg['jsnext:main']; |
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found = true; |
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} catch (err) { |
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log('resolve threw error trying to find pkg[\'jsnext:main\']:', err); |
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} |
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} |
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return pkg; |
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}
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