128 lines
17 KiB
JavaScript
128 lines
17 KiB
JavaScript
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'use strict';
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var _docsUrl = require('../docsUrl');
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var _docsUrl2 = _interopRequireDefault(_docsUrl);
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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module.exports = {
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meta: {
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type: 'suggestion',
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docs: {
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url: (0, _docsUrl2.default)('first')
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},
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fixable: 'code',
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schema: [{
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type: 'string',
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enum: ['absolute-first']
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}]
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},
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create: function (context) {
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function isPossibleDirective(node) {
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return node.type === 'ExpressionStatement' && node.expression.type === 'Literal' && typeof node.expression.value === 'string';
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}
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return {
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'Program': function (n) {
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const body = n.body,
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absoluteFirst = context.options[0] === 'absolute-first',
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message = 'Import in body of module; reorder to top.',
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sourceCode = context.getSourceCode(),
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originSourceCode = sourceCode.getText();
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let nonImportCount = 0,
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anyExpressions = false,
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anyRelative = false,
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lastLegalImp = null,
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errorInfos = [],
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shouldSort = true,
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lastSortNodesIndex = 0;
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body.forEach(function (node, index) {
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if (!anyExpressions && isPossibleDirective(node)) {
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return;
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}
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anyExpressions = true;
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if (node.type === 'ImportDeclaration') {
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if (absoluteFirst) {
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if (/^\./.test(node.source.value)) {
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anyRelative = true;
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} else if (anyRelative) {
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context.report({
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node: node.source,
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message: 'Absolute imports should come before relative imports.'
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});
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}
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}
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if (nonImportCount > 0) {
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for (let variable of context.getDeclaredVariables(node)) {
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if (!shouldSort) break;
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const references = variable.references;
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if (references.length) {
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for (let reference of references) {
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if (reference.identifier.range[0] < node.range[1]) {
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shouldSort = false;
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break;
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}
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}
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}
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}
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shouldSort && (lastSortNodesIndex = errorInfos.length);
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errorInfos.push({
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node,
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range: [body[index - 1].range[1], node.range[1]]
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});
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} else {
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lastLegalImp = node;
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}
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} else {
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nonImportCount++;
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}
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});
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if (!errorInfos.length) return;
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errorInfos.forEach(function (errorInfo, index) {
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const node = errorInfo.node,
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infos = {
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node,
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message
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};
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if (index < lastSortNodesIndex) {
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infos.fix = function (fixer) {
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return fixer.insertTextAfter(node, '');
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};
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} else if (index === lastSortNodesIndex) {
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const sortNodes = errorInfos.slice(0, lastSortNodesIndex + 1);
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infos.fix = function (fixer) {
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const removeFixers = sortNodes.map(function (_errorInfo) {
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return fixer.removeRange(_errorInfo.range);
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}),
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range = [0, removeFixers[removeFixers.length - 1].range[1]];
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let insertSourceCode = sortNodes.map(function (_errorInfo) {
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const nodeSourceCode = String.prototype.slice.apply(originSourceCode, _errorInfo.range);
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if (/\S/.test(nodeSourceCode[0])) {
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return '\n' + nodeSourceCode;
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}
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return nodeSourceCode;
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}).join(''),
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insertFixer = null,
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replaceSourceCode = '';
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if (!lastLegalImp) {
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insertSourceCode = insertSourceCode.trim() + insertSourceCode.match(/^(\s+)/)[0];
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}
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insertFixer = lastLegalImp ? fixer.insertTextAfter(lastLegalImp, insertSourceCode) : fixer.insertTextBefore(body[0], insertSourceCode);
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const fixers = [insertFixer].concat(removeFixers);
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fixers.forEach(function (computedFixer, i) {
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replaceSourceCode += originSourceCode.slice(fixers[i - 1] ? fixers[i - 1].range[1] : 0, computedFixer.range[0]) + computedFixer.text;
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});
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return fixer.replaceTextRange(range, replaceSourceCode);
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};
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}
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context.report(infos);
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});
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}
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};
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}
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};
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