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pip-services3-expressions-nodex - 1.0.4 | npmpackage.info

pip-services3-expressions-nodex

Tokenizers, parsers and expression calculators for Pip.Services in Node.js / ES2017

1.0.4

MIT

TypeScript

832.23 kB

3.4

Installations

npm install pip-services3-expressions-nodex

Developer Guide

BETA

Typescript

No

Module System

CommonJS

Min. Node Version

>=14.0.0

Node Version

18.15.0

NPM Version

9.5.0 Pull Requests

Open

0

Total

0

Closed

0

Issues

Open

0

Total

0

Closed

0

Releases

Unable to fetch releases

Languages

TypeScript

PowerShell

TypeScript (97.97%)

PowerShell (2.03%)

Developer

pip-services3-nodex

Download Statistics

Total Downloads

Last Day

Last Week

Last Month

Last Year

GitHub Statistics

MIT License

15 Commits

1 Forks

2 Watchers

1 Branches

3 Contributors

Updated on May 30, 2022

Maintainers

View All 3 Contributors

Package Meta Information

Latest Version

1.0.4

Package Id

pip-services3-expressions-nodex@1.0.4

Unpacked Size

832.23 kB

Size

118.44 kB

File Count

392

NPM Version

9.5.0

Node Version

18.15.0

Published on

Apr 03, 2023

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

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Yearly Downloads

Dependencies

pip-services3-commons-nodex

Dev Dependencies

@types/chai @types/mocha @types/node chai mocha

Tokenizers, parsers and expression calculators in Node.js / ES2017

This module is a part of the Pip.Services polyglot microservices toolkit. It provides syntax and lexical analyzers and expression calculator optimized for repeated calculations.

The module contains the following packages:

Calculator - Expression calculator
CSV - CSV tokenizer
IO - input/output utility classes to support lexical analysis
Mustache - Mustache templating engine
Tokenizers - lexical analyzers to break incoming character streams into tokens
Variants - dynamic objects that can hold any values and operators for them

Quick links:

Use

Install the NPM package as

1npm install pip-services3-expressions-nodex --save

The example below shows how to use expression calculator to dynamically calculate user-defined expressions.

1import { IConfigurable } from 'pip-services3-commons-nodex';
2import { ConfigParams } from 'pip-services3-commons-nodex';
3import { IReferenceable } from 'pip-services3-commons-nodex';
4import { IReferences } from 'pip-services3-commons-nodex';
5import { Descriptor } from 'pip-services3-commons-nodex';
6import { IOpenable } from 'pip-services3-commons-nodex';
7
8...
9let calculator = new ExpressionCalculator();
10
11calculator.expression = "A + b / (3 - Max(-123, 1)*2)";
12
13let vars = new VariableCollection();
14vars.add(new Variable("A", new Variant(1)));
15vars.add(new Variable("B", new Variant("3")));
16
17let result = await calculator.evaluateWithVariables(vars);
18console.log("The result of the expression is " + result.asString);
19...

This is an example to process mustache templates.

1let mustache = new MustacheTemplate();
2mustache.template = "Hello, {{{NAME}}}{{#ESCLAMATION}}!{{/ESCLAMATION}}{{#unless ESCLAMATION}}.{{/unless}}";
3let result = mustache.evaluateWithVariables({ NAME: 'Mike', ESCLAMATION: true });
4console.log("The result of template evaluation is '" + result + "'");

Develop

For development you shall install the following prerequisites:

Node.js 8+
Visual Studio Code or another IDE of your choice
Docker
Typescript

Install dependencies:

1npm install

Compile the code:

1tsc

Run automated tests:

1npm test

Generate API documentation:

1./docgen.ps1

Before committing changes run dockerized build and test as:

1./build.ps1
2./test.ps1
3./clear.ps1

Contacts

The module is created and maintained by Sergey Seroukhov.

No vulnerabilities found.

10

Dangerous-Workflow

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

10

Binary-Artifacts

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

10

License

Determines if the project has defined a license.

10

Vulnerabilities

Determines if the project has open, known unfixed vulnerabilities.

0

Code-Review

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

0

Maintained

Determines if the project is "actively maintained".

0

Token-Permissions

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

0

SAST

Determines if the project uses static code analysis.

0

CII-Best-Practices

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

0

Security-Policy

Determines if the project has published a security policy.

0

Fuzzing

Determines if the project uses fuzzing.

0

Branch-Protection

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

0

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 0

Details

Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/github-ci.yml:21: update your workflow using https://app.stepsecurity.io/secureworkflow/pip-services3-nodex/pip-services3-expressions-nodex/github-ci.yml/main?enable=pin
Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/github-ci.yml:39: update your workflow using https://app.stepsecurity.io/secureworkflow/pip-services3-nodex/pip-services3-expressions-nodex/github-ci.yml/main?enable=pin
Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/github-ci.yml:53: update your workflow using https://app.stepsecurity.io/secureworkflow/pip-services3-nodex/pip-services3-expressions-nodex/github-ci.yml/main?enable=pin
Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/github-ci.yml:56: update your workflow using https://app.stepsecurity.io/secureworkflow/pip-services3-nodex/pip-services3-expressions-nodex/github-ci.yml/main?enable=pin
Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/github-ci.yml:98: update your workflow using https://app.stepsecurity.io/secureworkflow/pip-services3-nodex/pip-services3-expressions-nodex/github-ci.yml/main?enable=pin
Warn: containerImage not pinned by hash: docker/Dockerfile.build:1: pin your Docker image by updating node:14 to node:14@sha256:a158d3b9b4e3fa813fa6c8c590b8f0a860e015ad4e59bbce5744d2f6fd8461aa
Warn: containerImage not pinned by hash: docker/Dockerfile.docs:1: pin your Docker image by updating node:14-alpine to node:14-alpine@sha256:434215b487a329c9e867202ff89e704d3a75e554822e07f3e0c0f9e606121b33
Warn: containerImage not pinned by hash: docker/Dockerfile.test:1: pin your Docker image by updating node:14 to node:14@sha256:a158d3b9b4e3fa813fa6c8c590b8f0a860e015ad4e59bbce5744d2f6fd8461aa
Warn: npmCommand not pinned by hash: docker/Dockerfile.build:4
Warn: npmCommand not pinned by hash: docker/Dockerfile.build:12
Warn: pipCommand not pinned by hash: docker/Dockerfile.docs:11-13
Warn: npmCommand not pinned by hash: docker/Dockerfile.docs:22-27
Warn: npmCommand not pinned by hash: docker/Dockerfile.docs:22-27
Warn: npmCommand not pinned by hash: docker/Dockerfile.docs:22-27
Warn: npmCommand not pinned by hash: docker/Dockerfile.docs:22-27
Warn: npmCommand not pinned by hash: docker/Dockerfile.docs:22-27
Warn: npmCommand not pinned by hash: docker/Dockerfile.docs:22-27
Warn: npmCommand not pinned by hash: docker/Dockerfile.test:9
Info: 0 out of 5 GitHub-owned GitHubAction dependencies pinned
Info: 0 out of 3 containerImage dependencies pinned
Info: 0 out of 9 npmCommand dependencies pinned
Info: 0 out of 1 pipCommand dependencies pinned

Score

3.4

/10

Last Scanned on 2025-06-30

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