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"use strict";
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
var _extends2 = _interopRequireDefault(require("@babel/runtime/helpers/extends"));
var _objectWithoutPropertiesLoose2 = _interopRequireDefault(require("@babel/runtime/helpers/objectWithoutPropertiesLoose"));
const p = require('path');
const resolve = require('resolve'); // const printAST = require('ast-pretty-print')
const macrosRegex = /[./]macro(\.js)?$/;
const testMacrosRegex = v => macrosRegex.test(v); // https://stackoverflow.com/a/32749533/971592
class MacroError extends Error { constructor(message) { super(message); this.name = 'MacroError'; /* istanbul ignore else */
if (typeof Error.captureStackTrace === 'function') { Error.captureStackTrace(this, this.constructor); } else if (!this.stack) { this.stack = new Error(message).stack; } }
}
let _configExplorer = null;
function getConfigExporer() { return _configExplorer = _configExplorer || // Lazy load cosmiconfig since it is a relatively large bundle
require('cosmiconfig').cosmiconfigSync('babel-plugin-macros', { searchPlaces: ['package.json', '.babel-plugin-macrosrc', '.babel-plugin-macrosrc.json', '.babel-plugin-macrosrc.yaml', '.babel-plugin-macrosrc.yml', '.babel-plugin-macrosrc.js', 'babel-plugin-macros.config.js'], packageProp: 'babelMacros' }); }
function createMacro(macro, options = {}) { if (options.configName === 'options') { throw new Error(`You cannot use the configName "options". It is reserved for babel-plugin-macros.`); }
macroWrapper.isBabelMacro = true; macroWrapper.options = options; return macroWrapper;
function macroWrapper(args) { const { source, isBabelMacrosCall } = args;
if (!isBabelMacrosCall) { throw new MacroError(`The macro you imported from "${source}" is being executed outside the context of compilation with babel-plugin-macros. ` + `This indicates that you don't have the babel plugin "babel-plugin-macros" configured correctly. ` + `Please see the documentation for how to configure babel-plugin-macros properly: ` + 'https://github.com/kentcdodds/babel-plugin-macros/blob/master/other/docs/user.md'); }
return macro(args); } }
function nodeResolvePath(source, basedir) { return resolve.sync(source, { basedir, // This is here to support the package being globally installed
// read more: https://github.com/kentcdodds/babel-plugin-macros/pull/138
paths: [p.resolve(__dirname, '../../')] }); }
function macrosPlugin(babel, _ref = {}) { let { require: _require = require, resolvePath = nodeResolvePath, isMacrosName = testMacrosRegex } = _ref, options = (0, _objectWithoutPropertiesLoose2.default)(_ref, ["require", "resolvePath", "isMacrosName"]);
function interopRequire(path) { // eslint-disable-next-line import/no-dynamic-require
const o = _require(path);
return o && o.__esModule && o.default ? o.default : o; }
return { name: 'macros', visitor: { Program(progPath, state) { progPath.traverse({ ImportDeclaration(path) { const isMacros = looksLike(path, { node: { source: { value: v => isMacrosName(v) } } });
if (!isMacros) { return; }
const imports = path.node.specifiers.map(s => ({ localName: s.local.name, importedName: s.type === 'ImportDefaultSpecifier' ? 'default' : s.imported.name })); const source = path.node.source.value; const result = applyMacros({ path, imports, source, state, babel, interopRequire, resolvePath, options });
if (!result || !result.keepImports) { path.remove(); } },
VariableDeclaration(path) { const isMacros = child => looksLike(child, { node: { init: { callee: { type: 'Identifier', name: 'require' }, arguments: args => args.length === 1 && isMacrosName(args[0].value) } } });
path.get('declarations').filter(isMacros).forEach(child => { const imports = child.node.id.name ? [{ localName: child.node.id.name, importedName: 'default' }] : child.node.id.properties.map(property => ({ localName: property.value.name, importedName: property.key.name })); const call = child.get('init'); const source = call.node.arguments[0].value; const result = applyMacros({ path: call, imports, source, state, babel, interopRequire, resolvePath, options });
if (!result || !result.keepImports) { child.remove(); } }); }
}); }
} }; } // eslint-disable-next-line complexity
function applyMacros({ path, imports, source, state, babel, interopRequire, resolvePath, options }) { /* istanbul ignore next (pretty much only useful for astexplorer I think) */ const { file: { opts: { filename = '' } } } = state; let hasReferences = false; const referencePathsByImportName = imports.reduce((byName, { importedName, localName }) => { const binding = path.scope.getBinding(localName); byName[importedName] = binding.referencePaths; hasReferences = hasReferences || Boolean(byName[importedName].length); return byName; }, {}); const isRelative = source.indexOf('.') === 0; const requirePath = resolvePath(source, p.dirname(getFullFilename(filename))); const macro = interopRequire(requirePath);
if (!macro.isBabelMacro) { throw new Error(`The macro imported from "${source}" must be wrapped in "createMacro" ` + `which you can get from "babel-plugin-macros". ` + `Please refer to the documentation to see how to do this properly: https://github.com/kentcdodds/babel-plugin-macros/blob/master/other/docs/author.md#writing-a-macro`); }
const config = getConfig(macro, filename, source, options); let result;
try { /** * Other plugins that run before babel-plugin-macros might use path.replace, where a path is * put into its own replacement. Apparently babel does not update the scope after such * an operation. As a remedy, the whole scope is traversed again with an empty "Identifier" * visitor - this makes the problem go away. * * See: https://github.com/kentcdodds/import-all.macro/issues/7
*/ state.file.scope.path.traverse({ Identifier() {}
}); result = macro({ references: referencePathsByImportName, source, state, babel, config, isBabelMacrosCall: true }); } catch (error) { if (error.name === 'MacroError') { throw error; }
error.message = `${source}: ${error.message}`;
if (!isRelative) { error.message = `${error.message} Learn more: https://www.npmjs.com/package/${source.replace( // remove everything after package name
// @org/package/macro -> @org/package
// package/macro -> package
/^((?:@[^/]+\/)?[^/]+).*/, '$1')}`;
}
throw error; }
return result; }
function getConfigFromFile(configName, filename) { try { const loaded = getConfigExporer().search(filename);
if (loaded) { return { options: loaded.config[configName], path: loaded.filepath }; } } catch (e) { return { error: e }; }
return {}; }
function getConfigFromOptions(configName, options) { if (options.hasOwnProperty(configName)) { if (options[configName] && typeof options[configName] !== 'object') { // eslint-disable-next-line no-console
console.error(`The macro plugin options' ${configName} property was not an object or null.`); } else { return { options: options[configName] }; } }
return {}; }
function getConfig(macro, filename, source, options) { const { configName } = macro.options;
if (configName) { const fileConfig = getConfigFromFile(configName, filename); const optionsConfig = getConfigFromOptions(configName, options);
if (optionsConfig.options === undefined && fileConfig.options === undefined && fileConfig.error !== undefined) { // eslint-disable-next-line no-console
console.error(`There was an error trying to load the config "${configName}" ` + `for the macro imported from "${source}. ` + `Please see the error thrown for more information.`); throw fileConfig.error; }
if (fileConfig.options !== undefined && optionsConfig.options !== undefined && typeof fileConfig.options !== 'object') { throw new Error(`${fileConfig.path} specified a ${configName} config of type ` + `${typeof optionsConfig.options}, but the the macros plugin's ` + `options.${configName} did contain an object. Both configs must ` + `contain objects for their options to be mergeable.`); }
return (0, _extends2.default)({}, optionsConfig.options, {}, fileConfig.options); }
return undefined; } /* istanbul ignore next because this is hard to test and not worth it... */
function getFullFilename(filename) { if (p.isAbsolute(filename)) { return filename; }
return p.join(process.cwd(), filename); }
function looksLike(a, b) { return a && b && Object.keys(b).every(bKey => { const bVal = b[bKey]; const aVal = a[bKey];
if (typeof bVal === 'function') { return bVal(aVal); }
return isPrimitive(bVal) ? bVal === aVal : looksLike(aVal, bVal); }); }
function isPrimitive(val) { // eslint-disable-next-line
return val == null || /^[sbn]/.test(typeof val); }
module.exports = macrosPlugin; Object.assign(module.exports, { createMacro, MacroError });
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