some deletions

[dotfiles/.git] / .config / coc / extensions / node_modules / coc-prettier / node_modules / eslint / lib / rules / use-isnan.js

diff --git a/.config/coc/extensions/node_modules/coc-prettier/node_modules/eslint/lib/rules/use-isnan.js b/.config/coc/extensions/node_modules/coc-prettier/node_modules/eslint/lib/rules/use-isnan.js
deleted file mode 100644 (file)
index cd9ccdb..0000000
--- a/.config/coc/extensions/node_modules/coc-prettier/node_modules/eslint/lib/rules/use-isnan.js
+++ /dev/null
@@ -1,138 +0,0 @@
-/**
- * @fileoverview Rule to flag comparisons to the value NaN
- * @author James Allardice
- */
-
-"use strict";
-
-//------------------------------------------------------------------------------
-// Requirements
-//------------------------------------------------------------------------------
-
-const astUtils = require("./utils/ast-utils");
-
-//------------------------------------------------------------------------------
-// Helpers
-//------------------------------------------------------------------------------
-
-/**
- * Determines if the given node is a NaN `Identifier` node.
- * @param {ASTNode|null} node The node to check.
- * @returns {boolean} `true` if the node is 'NaN' identifier.
- */
-function isNaNIdentifier(node) {
-    return Boolean(node) && node.type === "Identifier" && node.name === "NaN";
-}
-
-//------------------------------------------------------------------------------
-// Rule Definition
-//------------------------------------------------------------------------------
-
-module.exports = {
-    meta: {
-        type: "problem",
-
-        docs: {
-            description: "require calls to `isNaN()` when checking for `NaN`",
-            category: "Possible Errors",
-            recommended: true,
-            url: "https://eslint.org/docs/rules/use-isnan"
-        },
-
-        schema: [
-            {
-                type: "object",
-                properties: {
-                    enforceForSwitchCase: {
-                        type: "boolean",
-                        default: false
-                    },
-                    enforceForIndexOf: {
-                        type: "boolean",
-                        default: false
-                    }
-                },
-                additionalProperties: false
-            }
-        ],
-
-        messages: {
-            comparisonWithNaN: "Use the isNaN function to compare with NaN.",
-            switchNaN: "'switch(NaN)' can never match a case clause. Use Number.isNaN instead of the switch.",
-            caseNaN: "'case NaN' can never match. Use Number.isNaN before the switch.",
-            indexOfNaN: "Array prototype method '{{ methodName }}' cannot find NaN."
-        }
-    },
-
-    create(context) {
-
-        const enforceForSwitchCase = context.options[0] && context.options[0].enforceForSwitchCase;
-        const enforceForIndexOf = context.options[0] && context.options[0].enforceForIndexOf;
-
-        /**
-         * Checks the given `BinaryExpression` node for `foo === NaN` and other comparisons.
-         * @param {ASTNode} node The node to check.
-         * @returns {void}
-         */
-        function checkBinaryExpression(node) {
-            if (
-                /^(?:[<>]|[!=]=)=?$/u.test(node.operator) &&
-                (isNaNIdentifier(node.left) || isNaNIdentifier(node.right))
-            ) {
-                context.report({ node, messageId: "comparisonWithNaN" });
-            }
-        }
-
-        /**
-         * Checks the discriminant and all case clauses of the given `SwitchStatement` node for `switch(NaN)` and `case NaN:`
-         * @param {ASTNode} node The node to check.
-         * @returns {void}
-         */
-        function checkSwitchStatement(node) {
-            if (isNaNIdentifier(node.discriminant)) {
-                context.report({ node, messageId: "switchNaN" });
-            }
-
-            for (const switchCase of node.cases) {
-                if (isNaNIdentifier(switchCase.test)) {
-                    context.report({ node: switchCase, messageId: "caseNaN" });
-                }
-            }
-        }
-
-        /**
-         * Checks the the given `CallExpression` node for `.indexOf(NaN)` and `.lastIndexOf(NaN)`.
-         * @param {ASTNode} node The node to check.
-         * @returns {void}
-         */
-        function checkCallExpression(node) {
-            const callee = node.callee;
-
-            if (callee.type === "MemberExpression") {
-                const methodName = astUtils.getStaticPropertyName(callee);
-
-                if (
-                    (methodName === "indexOf" || methodName === "lastIndexOf") &&
-                    node.arguments.length === 1 &&
-                    isNaNIdentifier(node.arguments[0])
-                ) {
-                    context.report({ node, messageId: "indexOfNaN", data: { methodName } });
-                }
-            }
-        }
-
-        const listeners = {
-            BinaryExpression: checkBinaryExpression
-        };
-
-        if (enforceForSwitchCase) {
-            listeners.SwitchStatement = checkSwitchStatement;
-        }
-
-        if (enforceForIndexOf) {
-            listeners.CallExpression = checkCallExpression;
-        }
-
-        return listeners;
-    }
-};