fix: remove lodash dependency (#120)

.babelrc

@@ -7,7 +7,6 @@
     }
   },
   "plugins": [
-    "babel-plugin-lodash",
     "transform-export-default-name",
     "@babel/transform-flow-strip-types"
   ],

package.json

@@ -6,7 +6,6 @@
   },
   "dependencies": {
     "ajv": "^6.12.4",
-    "lodash": "^4.17.20",
     "slice-ansi": "^4.0.0",
     "string-width": "^4.2.0"
   },
@@ -21,7 +20,6 @@
     "ajv-cli": "^3.2.1",
     "ajv-keywords": "^3.5.2",
     "babel-plugin-istanbul": "^6.0.0",
-    "babel-plugin-lodash": "^3.3.4",
     "babel-plugin-transform-export-default-name": "^2.0.4",
     "chai": "^4.2.0",
     "chalk": "^4.1.0",

src/alignString.js

@@ -1,4 +1,3 @@
-import _ from 'lodash';
 import stringWidth from 'string-width';
 
 const alignments = [
@@ -54,11 +53,11 @@ const alignCenter = (subject, width) => {
  * @returns {string}
  */
 export default (subject, containerWidth, alignment) => {
-  if (!_.isString(subject)) {
+  if (typeof subject !== 'string') {
     throw new TypeError('Subject parameter value must be a string.');
   }
 
-  if (!_.isNumber(containerWidth)) {
+  if (typeof containerWidth !== 'number') {
     throw new TypeError('Container width parameter value must be a number.');
   }
 
@@ -70,7 +69,7 @@ export default (subject, containerWidth, alignment) => {
     throw new Error('Subject parameter value width cannot be greater than the container width.');
   }
 
-  if (!_.isString(alignment)) {
+  if (typeof alignment !== 'string') {
     throw new TypeError('Alignment parameter value must be a string.');
   }
 

src/calculateCellHeight.js

@@ -1,4 +1,3 @@
-import _ from 'lodash';
 import wrapCell from './wrapCell';
 
 /**
@@ -8,7 +7,7 @@ import wrapCell from './wrapCell';
  * @returns {number}
  */
 export default (value, columnWidth, useWrapWord = false) => {
-  if (!_.isString(value)) {
+  if (typeof value !== 'string') {
     throw new TypeError('Value must be a string.');
   }
 

src/calculateRowHeightIndex.js

@@ -1,4 +1,3 @@
-import _ from 'lodash';
 import calculateCellHeight from './calculateCellHeight';
 
 /**
@@ -17,18 +16,18 @@ export default (rows, config) => {
     const cellHeightIndex = new Array(tableWidth).fill(1);
 
     cells.forEach((value, index1) => {
-      if (!_.isNumber(config.columns[index1].width)) {
+      if (typeof config.columns[index1].width !== 'number') {
         throw new TypeError('column[index].width must be a number.');
       }
 
-      if (!_.isBoolean(config.columns[index1].wrapWord)) {
+      if (typeof config.columns[index1].wrapWord !== 'boolean') {
         throw new TypeError('column[index].wrapWord must be a boolean.');
       }
 
       cellHeightIndex[index1] = calculateCellHeight(value, config.columns[index1].width, config.columns[index1].wrapWord);
     });
 
-    rowSpanIndex.push(_.max(cellHeightIndex));
+    rowSpanIndex.push(Math.max(...cellHeightIndex));
   });
 
   return rowSpanIndex;

src/createStream.js

@@ -1,4 +1,3 @@
-import _ from 'lodash';
 import alignTableData from './alignTableData';
 import calculateRowHeightIndex from './calculateRowHeightIndex';
 import {
@@ -55,7 +54,7 @@ const create = (row, columnWidthIndex, config) => {
   output += body;
   output += drawBorderBottom(columnWidthIndex, config.border);
 
-  output = _.trimEnd(output);
+  output = output.trimEnd();
 
   process.stdout.write(output);
 };
@@ -84,7 +83,7 @@ const append = (row, columnWidthIndex, config) => {
   output += body;
   output += bottom;
 
-  output = _.trimEnd(output);
+  output = output.trimEnd();
 
   process.stdout.write(output);
 };
@@ -96,10 +95,9 @@ const append = (row, columnWidthIndex, config) => {
 export default (userConfig = {}) => {
   const config = makeStreamConfig(userConfig);
 
-  // @todo Use 'Object.values' when Node.js v6 support is dropped.
-  const columnWidthIndex = _.values(_.mapValues(config.columns, (column) => {
+  const columnWidthIndex = Object.values(config.columns).map((column) => {
     return column.width + column.paddingLeft + column.paddingRight;
-  }));
+  });
 
   let empty;
 

src/makeConfig.js

@@ -1,4 +1,3 @@
-import _ from 'lodash';
 import calculateMaximumColumnWidthIndex from './calculateMaximumColumnWidthIndex';
 import getBorderCharacters from './getBorderCharacters';
 import validateConfig from './validateConfig';
@@ -25,8 +24,8 @@ const makeBorder = (border = {}) => {
 const makeColumns = (rows, columns = {}, columnDefault = {}) => {
   const maximumColumnWidthIndex = calculateMaximumColumnWidthIndex(rows);
 
-  _.times(rows[0].length, (index) => {
-    if (_.isUndefined(columns[index])) {
+  for (let index = rows[0].length; index--;) {
+    if (!columns[index]) {
       columns[index] = {};
     }
 
@@ -38,7 +37,7 @@ const makeColumns = (rows, columns = {}, columnDefault = {}) => {
       width: maximumColumnWidthIndex[index],
       wrapWord: false,
     }, columnDefault, columns[index]);
-  });
+  }
 
   return columns;
 };
@@ -54,7 +53,7 @@ const makeColumns = (rows, columns = {}, columnDefault = {}) => {
 export default (rows, userConfig = {}) => {
   validateConfig('config.json', userConfig);
 
-  const config = _.cloneDeep(userConfig);
+  const config = {...userConfig};
 
   config.border = makeBorder(config.border);
   config.columns = makeColumns(rows, config.columns, config.columnDefault);

src/makeStreamConfig.js

@@ -1,4 +1,3 @@
-import _ from 'lodash';
 import getBorderCharacters from './getBorderCharacters';
 import validateConfig from './validateConfig';
 
@@ -22,8 +21,10 @@ const makeBorder = (border = {}) => {
  * @returns {object}
  */
 const makeColumns = (columnCount, columns = {}, columnDefault = {}) => {
-  _.times(columnCount, (index) => {
-    if (_.isUndefined(columns[index])) {
+  let index = columnCount;
+
+  while (index--) {
+    if (!columns[index]) {
       columns[index] = {};
     }
 
@@ -34,7 +35,7 @@ const makeColumns = (columnCount, columns = {}, columnDefault = {}) => {
       truncate: Infinity,
       wrapWord: false,
     }, columnDefault, columns[index]);
-  });
+  }
 
   return columns;
 };
@@ -66,7 +67,7 @@ const makeColumns = (columnCount, columns = {}, columnDefault = {}) => {
 export default (userConfig = {}) => {
   validateConfig('streamConfig.json', userConfig);
 
-  const config = _.cloneDeep(userConfig);
+  const config = {...userConfig};
 
   if (!config.columnDefault || !config.columnDefault.width) {
     throw new Error('Must provide config.columnDefault.width when creating a stream.');

src/mapDataUsingRowHeightIndex.js

@@ -1,4 +1,3 @@
-import _ from 'lodash';
 import wrapCell from './wrapCell';
 
 /**
@@ -11,7 +10,7 @@ export default (unmappedRows, rowHeightIndex, config) => {
   const tableWidth = unmappedRows[0].length;
 
   const mappedRows = unmappedRows.map((cells, index0) => {
-    const rowHeight = _.times(rowHeightIndex[index0], () => {
+    const rowHeight = Array.from({length: rowHeightIndex[index0]}, () => {
       return new Array(tableWidth).fill('');
     });
 
@@ -30,5 +29,6 @@ export default (unmappedRows, rowHeightIndex, config) => {
     return rowHeight;
   });
 
-  return _.flatten(mappedRows);
+  // flat array
+  return [].concat(...mappedRows);
 };

src/truncateTableData.js

@@ -1,4 +1,6 @@
-import _ from 'lodash';
+const truncate = (string, length) => {
+  return string.length > length ? string.slice(0, Math.max(0, length - 3)) + '...' : string;
+};
 
 /**
  * @todo Make it work with ASCII content.
@@ -9,9 +11,7 @@ import _ from 'lodash';
 export default (rows, config) => {
   return rows.map((cells) => {
     return cells.map((content, index) => {
-      return _.truncate(content, {
-        length: config.columns[index].truncate,
-      });
+      return truncate(content, config.columns[index].truncate);
     });
   });
 };

test/README/usage/expectTable.js

@@ -1,13 +1,12 @@
 import {
   expect,
 } from 'chai';
-import _ from 'lodash';
 
 /**
  * @param {string} result
  * @param {string} expectedResult
  * @returns {undefined}
  */
 export default (result, expectedResult) => {
-  expect(result).to.equal(_.trim(expectedResult) + '\n');
+  expect(result).to.equal(expectedResult.trim() + '\n');
 };

test/README/usage/moon_mission.js

@@ -1,5 +1,4 @@
 import chalk from 'chalk';
-import _ from 'lodash';
 import {
   table,
   getBorderCharacters,
@@ -52,7 +51,7 @@ describe('README.md usage/', () => {
       ],
     ];
 
-    const tableBorder = _.mapValues(getBorderCharacters('honeywell'), (char) => {
+    const tableBorder = Object.values(getBorderCharacters('honeywell')).map((char) => {
       return chalk.gray(char);
     });
 

test/README/usage/predefined_border_templates.js

@@ -1,4 +1,3 @@
-import _ from 'lodash';
 import {
   table,
   getBorderCharacters,
@@ -72,7 +71,7 @@ describe('README.md usage/predefined_border_templates', () => {
       border: getBorderCharacters('void'),
     });
 
-    expectTable(_.trim(output) + '\n', '0A  0B  0C \n\n 1A  1B  1C \n\n 2A  2B  2C');
+    expectTable(output.trim() + '\n', '0A  0B  0C \n\n 1A  1B  1C \n\n 2A  2B  2C');
   });
 
   it('borderless', () => {
@@ -87,6 +86,6 @@ describe('README.md usage/predefined_border_templates', () => {
       },
     });
 
-    expectTable(_.trim(output) + '\n', '0A 0B 0C \n1A 1B 1C \n2A 2B 2C');
+    expectTable(output.trim() + '\n', '0A 0B 0C \n1A 1B 1C \n2A 2B 2C');
   });
 });