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Diffstat (limited to 'tools/node_modules/eslint/lib/rules/no-whitespace-before-property.js')
-rw-r--r-- | tools/node_modules/eslint/lib/rules/no-whitespace-before-property.js | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/tools/node_modules/eslint/lib/rules/no-whitespace-before-property.js b/tools/node_modules/eslint/lib/rules/no-whitespace-before-property.js new file mode 100644 index 0000000000..2d476b66c0 --- /dev/null +++ b/tools/node_modules/eslint/lib/rules/no-whitespace-before-property.js @@ -0,0 +1,94 @@ +/** + * @fileoverview Rule to disallow whitespace before properties + * @author Kai Cataldo + */ +"use strict"; + +//------------------------------------------------------------------------------ +// Requirements +//------------------------------------------------------------------------------ + +const astUtils = require("../ast-utils"); + +//------------------------------------------------------------------------------ +// Rule Definition +//------------------------------------------------------------------------------ + +module.exports = { + meta: { + docs: { + description: "disallow whitespace before properties", + category: "Stylistic Issues", + recommended: false + }, + + fixable: "whitespace", + schema: [] + }, + + create(context) { + const sourceCode = context.getSourceCode(); + + //-------------------------------------------------------------------------- + // Helpers + //-------------------------------------------------------------------------- + + /** + * Reports whitespace before property token + * @param {ASTNode} node - the node to report in the event of an error + * @param {Token} leftToken - the left token + * @param {Token} rightToken - the right token + * @returns {void} + * @private + */ + function reportError(node, leftToken, rightToken) { + const replacementText = node.computed ? "" : "."; + + context.report({ + node, + message: "Unexpected whitespace before property {{propName}}.", + data: { + propName: sourceCode.getText(node.property) + }, + fix(fixer) { + if (!node.computed && astUtils.isDecimalInteger(node.object)) { + + /* + * If the object is a number literal, fixing it to something like 5.toString() would cause a SyntaxError. + * Don't fix this case. + */ + return null; + } + return fixer.replaceTextRange([leftToken.range[1], rightToken.range[0]], replacementText); + } + }); + } + + //-------------------------------------------------------------------------- + // Public + //-------------------------------------------------------------------------- + + return { + MemberExpression(node) { + let rightToken; + let leftToken; + + if (!astUtils.isTokenOnSameLine(node.object, node.property)) { + return; + } + + if (node.computed) { + rightToken = sourceCode.getTokenBefore(node.property, astUtils.isOpeningBracketToken); + leftToken = sourceCode.getTokenBefore(rightToken); + } else { + rightToken = sourceCode.getFirstToken(node.property); + leftToken = sourceCode.getTokenBefore(rightToken, 1); + } + + if (sourceCode.isSpaceBetweenTokens(leftToken, rightToken)) { + reportError(node, leftToken, rightToken); + } + } + }; + } +}; |