eslint/tests/_utils/index.js

   1 "use strict";
   2
   3 const {
   4     defineInMemoryFs,
   5     defineConfigArrayFactoryWithInMemoryFileSystem,
   6     defineCascadingConfigArrayFactoryWithInMemoryFileSystem,
   7     defineFileEnumeratorWithInMemoryFileSystem,
   8     defineCLIEngineWithInMemoryFileSystem,
   9     defineESLintWithInMemoryFileSystem
  10 } = require("./in-memory-fs");
  11
  12
  13 /**
  14  * Prevents leading spaces in a multiline template literal from appearing in the resulting string
  15  * @param {string[]} strings The strings in the template literal
  16  * @param {any[]} values The interpolation values in the template literal.
  17  * @returns {string} The template literal, with spaces removed from all lines
  18  */
  19 function unIndent(strings, ...values) {
  20     const text = strings
  21         .map((s, i) => (i === 0 ? s : values[i - 1] + s))
  22         .join("");
  23     const lines = text.replace(/^\n/u, "").replace(/\n\s*$/u, "").split("\n");
  24     const lineIndents = lines.filter(line => line.trim()).map(line => line.match(/ */u)[0].length);
  25     const minLineIndent = Math.min(...lineIndents);
  26
  27     return lines.map(line => line.slice(minLineIndent)).join("\n");
  28 }
  29
  30
  31 module.exports = {
  32     unIndent,
  33     defineInMemoryFs,
  34     defineConfigArrayFactoryWithInMemoryFileSystem,
  35     defineCascadingConfigArrayFactoryWithInMemoryFileSystem,
  36     defineFileEnumeratorWithInMemoryFileSystem,
  37     defineCLIEngineWithInMemoryFileSystem,
  38     defineESLintWithInMemoryFileSystem
  39 };