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21fc1378b8 Added more naming convention utilities
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2025-04-08 19:02:42 -04:00
a03567eba3 toCSV comma fix
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2025-04-06 21:37:01 -04:00
f9fc4fb7ff Better CSV handling
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2025-03-24 23:01:57 -04:00
ff16f3bf9b Better CSV handling
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2025-03-24 21:40:03 -04:00
e0085ecb6f Better CSV handling
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2025-03-24 21:28:51 -04:00
1c2c18b65d Added camelCase function
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2025-03-10 09:50:16 -04:00
cd5741d6ab Simplified timestampedFilename to use formatDate
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2025-03-02 21:37:48 -05:00
4 changed files with 103 additions and 28 deletions

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@ -1,6 +1,6 @@
{
"name": "@ztimson/utils",
"version": "0.23.13",
"version": "0.23.20",
"description": "Utility library",
"author": "Zak Timson",
"license": "MIT",

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@ -1,32 +1,59 @@
import {makeArray} from './array.ts';
import {ASet} from './aset.ts';
import {dotNotation, flattenObj, JSONSanitize} from './objects.ts';
import {LETTER_LIST} from './string.ts';
export function fromCsv<T = any>(csv: string, hasHeaders=true): T[] {
const row = csv.split('\n');
let headers: any = hasHeaders ? row.splice(0, 1)[0] : null;
if(headers) headers = headers.match(/(?:[^,"']+|"[^"]*"|'[^']*')+/g);
return <T[]>row.map(r => {
function parseLine(line: string): (string | null)[] {
const parts = line.split(','), columns: string[] = [];
let quoted = false;
for(const p of parts) {
if(quoted) columns[columns.length - 1] = columns.at(-1) + ',' + p;
else columns.push(p);
if(/[^"]"$/g.test(p)) {
quoted = false;
} else if(/^"[^"]/g.test(p)) {
quoted = true;
}
}
return columns;
/**
* Parse a CSV string into an array of objects
*
* @param csv String with CSV
* @param hasHeaders First line of CSV contains headers
* @return {T[]} Array of parsed objects
*/
export function fromCsv<T = any>(csv: string, hasHeaders = true): T[] {
function parseLine(line: string): (string | null)[] {
const columns: string[] = [];
let current = '', inQuotes = false;
for (let i = 0; i < line.length; i++) {
const char = line[i];
const nextChar = line[i + 1];
if (char === '"') {
if (inQuotes && nextChar === '"') {
current += '"'; // Handle escaped quotes
i++;
} else inQuotes = !inQuotes;
} else if (char === ',' && !inQuotes) {
columns.push(current.trim()); // Trim column values
current = '';
} else current += char;
}
columns.push(current.trim()); // Trim last column value
return columns.map(col => col.replace(/^"|"$/g, '').replace(/""/g, '"'));
}
// Normalize line endings and split rows
const rows = [];
let currentRow = '', inQuotes = false;
for (const char of csv.replace(/\r\n/g, '\n')) { // Normalize \r\n to \n
if (char === '"') inQuotes = !inQuotes;
if (char === '\n' && !inQuotes) {
rows.push(currentRow.trim()); // Trim row
currentRow = '';
} else currentRow += char;
}
if (currentRow) rows.push(currentRow.trim()); // Trim last row
// Extract headers
let headers: any = hasHeaders ? rows.splice(0, 1)[0] : null;
if (headers) headers = headers.match(/(?:[^,"']+|"(?:[^"]|"")*"|'(?:[^']|'')*')+/g)?.map((h: any) => h.trim());
// Parse rows
return <T[]>rows.map(r => {
const props = parseLine(r);
const h = headers || (Array(props.length).fill(null).map((r, i) => {
const h = headers || (Array(props.length).fill(null).map((_, i) => {
let letter = '';
const first = i / 26;
if(first > 1) letter += LETTER_LIST[Math.floor(first - 1)];
if (first > 1) letter += LETTER_LIST[Math.floor(first - 1)];
letter += LETTER_LIST[i % 26];
return letter;
}));
@ -34,23 +61,28 @@ export function fromCsv<T = any>(csv: string, hasHeaders=true): T[] {
dotNotation(acc, h, props[i]);
return acc;
}, {});
})
});
}
/**
* Convert an object to a CSV string
* Convert an array of objects to a CSV string
*
* @param {any[]} target Array of objects to create CSV from
* @param {boolean} flatten Should nested object be flattened or treated as values
* @return {string} CSV string
*/
export function toCsv(target: any[], flatten=true) {
const headers = new ASet(target.reduce((acc, row) => [...acc, ...Object.keys(flatten ? flattenObj(row) : row)], []));
export function toCsv(target: any, flatten=true) {
const t = makeArray(target);
const headers = new ASet(t.reduce((acc, row) => [...acc, ...Object.keys(flatten ? flattenObj(row) : row)], []));
return [
headers.join(','),
...target.map(row => headers.map((h: string) => {
...t.map(row => headers.map((h: string) => {
const value = dotNotation<any>(row, h);
return (typeof value == 'object' && value != null) ? '"' + JSONSanitize(value).replaceAll('"', '""') + '"' : value;
if(value == null) return '';
if(typeof value == 'object') return `"${JSONSanitize(value).replaceAll('"', '""')}"`;
if(typeof value == 'string' && /[\n",]/g.test(value)) return `"${value.replaceAll('"', '""')}"`;
return value;
}).join(','))
].join('\n');
}

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@ -1,6 +1,7 @@
import {makeArray} from './array.ts';
import {JSONAttemptParse} from './objects.ts';
import {PromiseProgress} from './promise-progress';
import {formatDate} from './time.ts';
/**
* Download blob as a file
@ -76,7 +77,7 @@ export function fileText(file: any): Promise<string | null> {
*/
export function timestampFilename(name?: string, date: Date | number | string = new Date()) {
if(typeof date == 'number' || typeof date == 'string') date = new Date(date);
const timestamp = `${date.getFullYear()}-${(date.getMonth() + 1).toString().padStart(2, '0')}-${date.getDate().toString().padStart(2, '0')}_${date.getHours().toString().padStart(2, '0')}-${date.getMinutes().toString().padStart(2, '0')}-${date.getSeconds().toString().padStart(2, '0')}`;
const timestamp = formatDate('YYYY-MM-DD_HH:mm:ss', date);
return name ? name.replace('{{TIMESTAMP}}', timestamp) : timestamp;
}

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@ -18,6 +18,14 @@ export const SYMBOL_LIST = '~`!@#$%^&*()_-+={[}]|\\:;"\'<,>.?/';
*/
export const CHAR_LIST = LETTER_LIST + LETTER_LIST.toLowerCase() + NUMBER_LIST + SYMBOL_LIST;
/**
* Converts text to camelCase
*/
export function camelCase(str?: string) {
const text = pascalCase(str);
return text[0].toLowerCase() + text.slice(1);
}
/**
* Convert number of bytes into a human-readable size
*
@ -64,6 +72,17 @@ export function insertAt(target: string, str: string, index: number): String {
return `${target.slice(0, index)}${str}${target.slice(index + 1)}`;
}
/**
* Converts text to kebab-case
*/
export function kebabCase(str: string) {
if(!str) return '';
return str.replaceAll(/(^[^a-zA-Z]+|[^a-zA-Z0-9-_])/g, '')
.replaceAll(/([A-Z]|[0-9]+)/g, (...args) => `-${args[0].toLowerCase()}`)
.replaceAll(/([0-9])([a-z])/g, (...args) => `${args[1]}-${args[2]}`)
.replaceAll(/[^a-z0-9]+(\w?)/g, (...args) => `-${args[1] ?? ''}`).toLowerCase();
}
/**
* Add padding to string
*
@ -86,6 +105,18 @@ export function pad(text: any, length: number, char: string = ' ', start = true)
return text.toString().padEnd(length, char);
}
/**
* Convert text to PascalCase
* @param {string} str
* @return {string}
*/
export function pascalCase(str?: string) {
if(!str) return '';
const text = str.replaceAll(/(^[^a-zA-Z]+|[^a-zA-Z0-9-_])/g, '')
.replaceAll(/[^a-zA-Z0-9]+(\w?)/g, (...args) => args[1]?.toUpperCase() || '');
return text[0].toUpperCase() + text.slice(1);
}
/**
* Generate a random hexadecimal value
*
@ -149,6 +180,17 @@ export function randomStringBuilder(length: number, letters = false, numbers = f
}).join('');
}
/**
* Converts text to snake_case
*/
export function snakeCase(str?: string) {
if(!str) return '';
return str.replaceAll(/(^[^a-zA-Z]+|[^a-zA-Z0-9-_])/g, '')
.replaceAll(/([A-Z]|[0-9]+)/g, (...args) => `_${args[0].toLowerCase()}`)
.replaceAll(/([0-9])([a-z])/g, (...args) => `${args[1]}_${args[2]}`)
.replaceAll(/[^a-z0-9]+(\w?)/g, (...args) => `_${args[1] ?? ''}`).toLowerCase();
}
/**
* Splice a string together (Similar to Array.splice)
*