first commit

app_vue/node_modules/eslint/lib/linter/timing.js

@@ -0,0 +1,160 @@
+/**
+ * @fileoverview Tracks performance of individual rules.
+ * @author Brandon Mills
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/* istanbul ignore next */
+/**
+ * Align the string to left
+ * @param {string} str string to evaluate
+ * @param {int} len length of the string
+ * @param {string} ch delimiter character
+ * @returns {string} modified string
+ * @private
+ */
+function alignLeft(str, len, ch) {
+    return str + new Array(len - str.length + 1).join(ch || " ");
+}
+
+/* istanbul ignore next */
+/**
+ * Align the string to right
+ * @param {string} str string to evaluate
+ * @param {int} len length of the string
+ * @param {string} ch delimiter character
+ * @returns {string} modified string
+ * @private
+ */
+function alignRight(str, len, ch) {
+    return new Array(len - str.length + 1).join(ch || " ") + str;
+}
+
+//------------------------------------------------------------------------------
+// Module definition
+//------------------------------------------------------------------------------
+
+const enabled = !!process.env.TIMING;
+
+const HEADERS = ["Rule", "Time (ms)", "Relative"];
+const ALIGN = [alignLeft, alignRight, alignRight];
+
+/**
+ * Decide how many rules to show in the output list.
+ * @returns {number} the number of rules to show
+ */
+function getListSize() {
+    const MINIMUM_SIZE = 10;
+
+    if (typeof process.env.TIMING !== "string") {
+        return MINIMUM_SIZE;
+    }
+
+    if (process.env.TIMING.toLowerCase() === "all") {
+        return Number.POSITIVE_INFINITY;
+    }
+
+    const TIMING_ENV_VAR_AS_INTEGER = Number.parseInt(process.env.TIMING, 10);
+
+    return TIMING_ENV_VAR_AS_INTEGER > 10 ? TIMING_ENV_VAR_AS_INTEGER : MINIMUM_SIZE;
+}
+
+/* istanbul ignore next */
+/**
+ * display the data
+ * @param {Object} data Data object to be displayed
+ * @returns {void} prints modified string with console.log
+ * @private
+ */
+function display(data) {
+    let total = 0;
+    const rows = Object.keys(data)
+        .map(key => {
+            const time = data[key];
+
+            total += time;
+            return [key, time];
+        })
+        .sort((a, b) => b[1] - a[1])
+        .slice(0, getListSize());
+
+    rows.forEach(row => {
+        row.push(`${(row[1] * 100 / total).toFixed(1)}%`);
+        row[1] = row[1].toFixed(3);
+    });
+
+    rows.unshift(HEADERS);
+
+    const widths = [];
+
+    rows.forEach(row => {
+        const len = row.length;
+
+        for (let i = 0; i < len; i++) {
+            const n = row[i].length;
+
+            if (!widths[i] || n > widths[i]) {
+                widths[i] = n;
+            }
+        }
+    });
+
+    const table = rows.map(row => (
+        row
+            .map((cell, index) => ALIGN[index](cell, widths[index]))
+            .join(" | ")
+    ));
+
+    table.splice(1, 0, widths.map((width, index) => {
+        const extraAlignment = index !== 0 && index !== widths.length - 1 ? 2 : 1;
+
+        return ALIGN[index](":", width + extraAlignment, "-");
+    }).join("|"));
+
+    console.log(table.join("\n")); // eslint-disable-line no-console
+}
+
+/* istanbul ignore next */
+module.exports = (function() {
+
+    const data = Object.create(null);
+
+    /**
+     * Time the run
+     * @param {*} key key from the data object
+     * @param {Function} fn function to be called
+     * @returns {Function} function to be executed
+     * @private
+     */
+    function time(key, fn) {
+        if (typeof data[key] === "undefined") {
+            data[key] = 0;
+        }
+
+        return function(...args) {
+            let t = process.hrtime();
+
+            fn(...args);
+            t = process.hrtime(t);
+            data[key] += t[0] * 1e3 + t[1] / 1e6;
+        };
+    }
+
+    if (enabled) {
+        process.on("exit", () => {
+            display(data);
+        });
+    }
+
+    return {
+        time,
+        enabled,
+        getListSize
+    };
+
+}());