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index.js
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index.js
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// @flow weak
/* eslint-disable global-require, import/no-dynamic-require */
import { visitors } from 'babel-traverse';
import isAnnotatedForRemoval from './isAnnotatedForRemoval';
import isStatelessComponent from './isStatelessComponent';
import remove from './remove';
function isPathReactClass(path) {
if (path.matchesPattern('React.Component') ||
path.matchesPattern('React.PureComponent')) {
return true;
}
const node = path.node;
if (node && (node.name === 'Component' || node.name === 'PureComponent')) {
return true;
}
return false;
}
function isReactClass(superClass, scope) {
if (!superClass.node) {
return false;
}
let answer = false;
if (isPathReactClass(superClass)) {
answer = true;
} else if (superClass.node.name) { // Check for inheritance
const className = superClass.node.name;
const binding = scope.getBinding(className);
if (!binding) {
answer = false;
} else {
superClass = binding.path.get('superClass');
if (isPathReactClass(superClass)) {
answer = true;
}
}
}
return answer;
}
export default function ({ template, types }) {
return {
visitor: {
Program(programPath, state) {
let ignoreFilenames;
if (state.opts.ignoreFilenames) {
ignoreFilenames = new RegExp(state.opts.ignoreFilenames.join('|'), 'gi');
} else {
ignoreFilenames = undefined;
}
const globalOptions = {
visitedKey: `transform-react-remove-prop-types${Date.now()}`,
unsafeWrapTemplate: template(`
if (process.env.NODE_ENV !== "production") {
NODE;
}
`),
wrapTemplate: template(`
LEFT = process.env.NODE_ENV !== "production" ? RIGHT : {}
`),
mode: state.opts.mode || 'remove',
ignoreFilenames,
types,
removeImport: state.opts.removeImport || false,
libraries: (state.opts.additionalLibraries || []).concat('prop-types'),
};
if (state.opts.plugins) {
const pluginsVisitors = state.opts.plugins.map((pluginName) => {
const plugin = require(pluginName);
return plugin({ template, types }).visitor;
});
programPath.traverse(visitors.merge(pluginsVisitors));
}
// On program start, do an explicit traversal up front for this plugin.
programPath.traverse({
ObjectProperty: {
exit(path) {
const node = path.node;
if (node.computed || node.key.name !== 'propTypes') {
return;
}
const parent = path.findParent((currentNode) => {
if (currentNode.type !== 'CallExpression') {
return false;
}
return currentNode.get('callee').node.name === 'createReactClass';
});
if (parent) {
remove(path, globalOptions, {
type: 'createClass',
});
}
},
},
// Here to support stage-1 transform-class-properties.
ClassProperty(path) {
const {
node,
scope,
} = path;
if (node.key.name === 'propTypes') {
const pathClassDeclaration = scope.path;
if (isReactClass(pathClassDeclaration.get('superClass'), scope)) {
remove(path, globalOptions, {
type: 'class static',
pathClassDeclaration,
});
}
}
},
AssignmentExpression(path) {
const {
node,
scope,
} = path;
if (node.left.computed || !node.left.property || node.left.property.name !== 'propTypes') {
return;
}
const className = node.left.object.name;
const binding = scope.getBinding(className);
if (!binding) {
return;
}
const forceRemoval = isAnnotatedForRemoval(path.node.left);
if (binding.path.isClassDeclaration()) {
const superClass = binding.path.get('superClass');
if (isReactClass(superClass, scope) || forceRemoval) {
remove(path, globalOptions, {
type: 'class assign',
});
}
} else if (isStatelessComponent(binding.path) || forceRemoval) {
remove(path, globalOptions, {
type: 'stateless',
});
}
},
});
if (globalOptions.removeImport) {
if (globalOptions.mode === 'remove') {
programPath.scope.crawl();
programPath.traverse({
ImportDeclaration(path) {
const { source, specifiers } = path.node;
if (!globalOptions.libraries.includes(source.value)) {
return;
}
const haveUsedSpecifiers = specifiers.some((specifier) => {
const importedIdentifierName = specifier.local.name;
const { referencePaths } = path.scope.getBinding(importedIdentifierName);
return referencePaths.length > 0;
});
if (!haveUsedSpecifiers) {
path.remove();
}
},
});
} else {
throw new Error(
'react-remove-prop-types: removeImport and mode=remove can not be used at the same time.',
);
}
}
},
},
};
}