npmpackage.info

Gathering detailed insights and metrics for @csstools/css-calc

Other packages similar to @csstools/css-calc

@csstools/postcss-nested-calc

4.0.0

Use nested calc() expressions in CSS

Gathering detailed insights and metrics for @csstools/css-calc

@csstools/css-calc - 2.1.4 | npmpackage.info

@csstools/css-calc

PostCSS Tools and Plugins

2.1.4

984

MIT-0

CSS

69.35 kB

5.8

Installations

npm install @csstools/css-calc

Developer Guide

BETA

Typescript

Yes

Module System

ESM

Min. Node Version

>=18

Node Version

22.12.0

NPM Version

10.9.0 Pull Requests

Open

4

Total

1,232

Closed

171

Merged

1,057

Issues

Open

6

Total

364

Closed

358

Releases

Unable to fetch releases

Languages

CSS

JavaScript

TypeScript

HTML

Nunjucks

Shell

SCSS

CSS (43.25%)

JavaScript (30.24%)

TypeScript (22.9%)

HTML (3.03%)

Nunjucks (0.48%)

Shell (0.1%)

Developer

csstools

Download Statistics

Total Downloads

Last Day

Last Week

Last Month

Last Year

GitHub Statistics

MIT-0 License

984 Stars

4,380 Commits

77 Forks

9 Watchers

6 Branches

132 Contributors

Updated on Jul 12, 2025

Sponsor this package

https://github.com/sponsors/csstools https://opencollective.com/csstools

Maintainers

View All 132 Contributors

Package Meta Information

Latest Version

2.1.4

Package Id

@csstools/css-calc@2.1.4

Unpacked Size

69.35 kB

Size

18.91 kB

File Count

NPM Version

10.9.0

Node Version

22.12.0

Published on

May 27, 2025

Total Downloads

Cumulative downloads

Total Downloads

NaN

Last Day

NaN

Compared to previous day

Last Week

NaN

Compared to previous week

Last Month

NaN

Compared to previous month

Last Year

NaN

Compared to previous year

Weekly Downloads

Monthly Downloads

Yearly Downloads

Peer Dependencies

@csstools/css-parser-algorithms @csstools/css-tokenizer

CSS Calc

Implemented from : https://drafts.csswg.org/css-values-4/ on 2023-02-17

Usage

Add CSS calc to your project:

1npm install @csstools/css-calc @csstools/css-parser-algorithms @csstools/css-tokenizer --save-dev

With string values :

1import { calc } from '@csstools/css-calc';
2
3// '20'
4console.log(calc('calc(10 * 2)'));

With component values :

1import { stringify, tokenizer } from '@csstools/css-tokenizer';
2import { parseCommaSeparatedListOfComponentValues } from '@csstools/css-parser-algorithms';
3import { calcFromComponentValues } from '@csstools/css-calc';
4
5const t = tokenizer({
6	css: 'calc(10 * 2)',
7});
8
9const tokens = [];
10
11{
12	while (!t.endOfFile()) {
13		tokens.push(t.nextToken());
14	}
15
16	tokens.push(t.nextToken()); // EOF-token
17}
18
19const result = parseCommaSeparatedListOfComponentValues(tokens, {});
20
21// filter or mutate the component values
22
23const calcResult = calcFromComponentValues(result, { precision: 5, toCanonicalUnits: true });
24
25// filter or mutate the component values even further
26
27const calcResultStr = calcResult.map((componentValues) => {
28	return componentValues.map((x) => stringify(...x.tokens())).join('');
29}).join(',');
30
31// '20'
32console.log(calcResultStr);

Options

`precision` :

The default precision is fairly high. It aims to be high enough to make rounding unnoticeable in the browser.

You can set it to a lower number to suit your needs.

1import { calc } from '@csstools/css-calc';
2
3// '0.3'
4console.log(calc('calc(1 / 3)', { precision: 1 }));
5// '0.33'
6console.log(calc('calc(1 / 3)', { precision: 2 }));

`globals` :

Pass global values as a map of key value pairs.

Example : Relative color syntax (lch(from pink calc(l / 2) c h)) exposes color channel information as ident tokens. By passing globals for l, c and h it is possible to solve nested calc()'s.

1import { calc } from '@csstools/css-calc';
2
3const globals = new Map([
4	['a', '10px'],
5	['b', '2rem'],
6]);
7
8// '20px'
9console.log(calc('calc(a * 2)', { globals: globals }));
10// '6rem'
11console.log(calc('calc(b * 3)', { globals: globals }));

`toCanonicalUnits` :

By default this package will try to preserve units. The heuristic to do this is very simplistic. We take the first unit we encounter and try to convert other dimensions to that unit.

This better matches what users expect from a CSS dev tool.

If you want to have outputs that are closes to CSS serialized values you can pass toCanonicalUnits: true.

1import { calc } from '@csstools/css-calc';
2
3// '20hz'
4console.log(calc('calc(0.01khz + 10hz)', { toCanonicalUnits: true }));
5
6// '20hz'
7console.log(calc('calc(10hz + 0.01khz)', { toCanonicalUnits: true }));
8
9// '0.02khz' !!!
10console.log(calc('calc(0.01khz + 10hz)', { toCanonicalUnits: false }));
11
12// '20hz'
13console.log(calc('calc(10hz + 0.01khz)', { toCanonicalUnits: false }));

No vulnerabilities found.

10

Maintained

Determines if the project is "actively maintained".

10

Dangerous-Workflow

Determines if the project's GitHub Action workflows avoid dangerous patterns.

10

Security-Policy

Determines if the project has published a security policy.

10

License

Determines if the project has defined a license.

10

Binary-Artifacts

Determines if the project has generated executable (binary) artifacts in the source repository.

9

Vulnerabilities

Determines if the project has open, known unfixed vulnerabilities.

7

SAST

Determines if the project uses static code analysis.

3

Branch-Protection

Determines if the default and release branches are protected with GitHub's branch protection settings.

3

Pinned-Dependencies

Determines if the project has declared and pinned the dependencies of its build process.

Reason

dependency not pinned by hash detected -- score normalized to 3

Details

Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/codeql.yml:24: update your workflow using https://app.stepsecurity.io/secureworkflow/csstools/postcss-plugins/codeql.yml/main?enable=pin
Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/codeql.yml:27: update your workflow using https://app.stepsecurity.io/secureworkflow/csstools/postcss-plugins/codeql.yml/main?enable=pin
Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/codeql.yml:33: update your workflow using https://app.stepsecurity.io/secureworkflow/csstools/postcss-plugins/codeql.yml/main?enable=pin
Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/codeql.yml:42: update your workflow using https://app.stepsecurity.io/secureworkflow/csstools/postcss-plugins/codeql.yml/main?enable=pin
Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/deploy-preset-env.yml:20: update your workflow using https://app.stepsecurity.io/secureworkflow/csstools/postcss-plugins/deploy-preset-env.yml/main?enable=pin
Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/deploy-preset-env.yml:23: update your workflow using https://app.stepsecurity.io/secureworkflow/csstools/postcss-plugins/deploy-preset-env.yml/main?enable=pin
Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/labeler.yml:13: update your workflow using https://app.stepsecurity.io/secureworkflow/csstools/postcss-plugins/labeler.yml/main?enable=pin
Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/lint.yml:17: update your workflow using https://app.stepsecurity.io/secureworkflow/csstools/postcss-plugins/lint.yml/main?enable=pin
Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/lint.yml:20: update your workflow using https://app.stepsecurity.io/secureworkflow/csstools/postcss-plugins/lint.yml/main?enable=pin
Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/test.yml:34: update your workflow using https://app.stepsecurity.io/secureworkflow/csstools/postcss-plugins/test.yml/main?enable=pin
Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/test.yml:37: update your workflow using https://app.stepsecurity.io/secureworkflow/csstools/postcss-plugins/test.yml/main?enable=pin
Warn: npmCommand not pinned by hash: .github/workflows/test.yml:98
Info: 0 out of 11 GitHub-owned GitHubAction dependencies pinned
Info: 6 out of 7 npmCommand dependencies pinned

0

Code-Review

Determines if the project requires human code review before pull requests (aka merge requests) are merged.

0

CII-Best-Practices

Determines if the project has an OpenSSF (formerly CII) Best Practices Badge.

0

Token-Permissions

Determines if the project's workflows follow the principle of least privilege.

0

Fuzzing

Determines if the project uses fuzzing.

Score

5.8

/10

Last Scanned on 2025-07-07

The Open Source Security Foundation is a cross-industry collaboration to improve the security of open source software (OSS). The Scorecard provides security health metrics for open source projects.

Learn More

Other packages similar to @csstools/css-calc

Other packages similar to @csstools/css-calc

@csstools/css-calc

Installations

Developer Guide

Yes

ESM

>=18

22.12.0

10.9.0

Pull Requests

4

1,232

171

1,057

Issues

6

364

358

Releases

Unable to fetch releases

Languages

Developer

Download Statistics

GitHub Statistics

Sponsor this package

Maintainers

Package Meta Information

Total Downloads

NaN

Weekly Downloads

Monthly Downloads

Yearly Downloads

Peer Dependencies

CSS Calc

Usage

With string values :

With component values :

Options

precision :

globals :

toCanonicalUnits :

10

10

10

10

10

9

7

3

3

0

0

0

0

5.8

/10

`precision` :

`globals` :

`toCanonicalUnits` :