mirror of https://github.com/Budibase/budibase.git
Andrew Kingston
6 years ago
36 changed files with 5122 additions and 8593 deletions
@ -1,73 +0,0 @@ |
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const handlebars = require("handlebars") |
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|
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handlebars.registerHelper("object", value => { |
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return new handlebars.SafeString(JSON.stringify(value)) |
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}) |
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|
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/** |
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* When running mustache statements to execute on the context of the automation it possible user's may input mustache |
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* in a few different forms, some of which are invalid but are logically valid. An example of this would be the mustache |
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* statement "{{steps[0].revision}}" here it is obvious the user is attempting to access an array or object using array |
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* like operators. These are not supported by Mustache and therefore the statement will fail. This function will clean up |
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* the mustache statement so it instead reads as "{{steps.0.revision}}" which is valid and will work. It may also be expanded |
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* to include any other mustache statement cleanup that has been deemed necessary for the system. |
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* |
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* @param {string} string The string which *may* contain mustache statements, it is OK if it does not contain any. |
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* @returns {string} The string that was input with cleaned up mustache statements as required. |
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*/ |
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function cleanMustache(string) { |
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let charToReplace = { |
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"[": ".", |
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"]": "", |
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} |
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let regex = new RegExp(/{{[^}}]*}}/g) |
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let matches = string.match(regex) |
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if (matches == null) { |
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return string |
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} |
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for (let match of matches) { |
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let baseIdx = string.indexOf(match) |
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for (let key of Object.keys(charToReplace)) { |
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let idxChar = match.indexOf(key) |
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if (idxChar !== -1) { |
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string = |
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string.slice(baseIdx, baseIdx + idxChar) + |
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charToReplace[key] + |
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string.slice(baseIdx + idxChar + 1) |
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} |
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} |
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} |
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return string |
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} |
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|
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/** |
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* Given an input object this will recurse through all props to try and update |
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* any handlebars/mustache statements within. |
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* @param {object|array} inputs The input structure which is to be recursed, it is important to note that |
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* if the structure contains any cycles then this will fail. |
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* @param {object} context The context that handlebars should fill data from. |
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* @returns {object|array} The structure input, as fully updated as possible. |
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*/ |
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function recurseMustache(inputs, context) { |
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// JSON stringify will fail if there are any cycles, stops infinite recursion
|
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try { |
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JSON.stringify(inputs) |
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} catch (err) { |
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throw "Unable to process inputs to JSON, cannot recurse" |
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} |
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for (let key of Object.keys(inputs)) { |
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let val = inputs[key] |
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if (typeof val === "string") { |
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val = cleanMustache(inputs[key]) |
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const template = handlebars.compile(val) |
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inputs[key] = template(context) |
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} |
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// this covers objects and arrays
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else if (typeof val === "object") { |
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inputs[key] = recurseMustache(inputs[key], context) |
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} |
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} |
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return inputs |
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} |
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|
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exports.recurseMustache = recurseMustache |
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File diff suppressed because it is too large
@ -0,0 +1,12 @@ |
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{ |
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"globals": { |
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"emit": true, |
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"key": true |
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}, |
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"env": { |
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"node": true |
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}, |
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"extends": ["eslint:recommended"], |
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"rules": { |
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} |
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} |
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@ -0,0 +1,2 @@ |
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dist/ |
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node_modules/ |
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@ -0,0 +1,194 @@ |
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/* |
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* For a detailed explanation regarding each configuration property, visit: |
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* https://jestjs.io/docs/en/configuration.html
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*/ |
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|
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module.exports = { |
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// All imported modules in your tests should be mocked automatically
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// automock: false,
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|
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// Stop running tests after `n` failures
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// bail: 0,
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|
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// The directory where Jest should store its cached dependency information
|
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// cacheDirectory: "/tmp/jest_rs",
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|
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// Automatically clear mock calls and instances between every test
|
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clearMocks: true, |
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|
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// Indicates whether the coverage information should be collected while executing the test
|
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// collectCoverage: false,
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|
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// An array of glob patterns indicating a set of files for which coverage information should be collected
|
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// collectCoverageFrom: undefined,
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|
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// The directory where Jest should output its coverage files
|
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coverageDirectory: "coverage", |
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|
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// An array of regexp pattern strings used to skip coverage collection
|
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// coveragePathIgnorePatterns: [
|
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// "/node_modules/"
|
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// ],
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|
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// Indicates which provider should be used to instrument code for coverage
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coverageProvider: "v8", |
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|
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// A list of reporter names that Jest uses when writing coverage reports
|
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// coverageReporters: [
|
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// "json",
|
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// "text",
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// "lcov",
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// "clover"
|
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// ],
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|
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// An object that configures minimum threshold enforcement for coverage results
|
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// coverageThreshold: undefined,
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|
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// A path to a custom dependency extractor
|
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// dependencyExtractor: undefined,
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|
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// Make calling deprecated APIs throw helpful error messages
|
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// errorOnDeprecated: false,
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|
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// Force coverage collection from ignored files using an array of glob patterns
|
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// forceCoverageMatch: [],
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|
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// A path to a module which exports an async function that is triggered once before all test suites
|
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// globalSetup: undefined,
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|
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// A path to a module which exports an async function that is triggered once after all test suites
|
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// globalTeardown: undefined,
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|
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// A set of global variables that need to be available in all test environments
|
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// globals: {},
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|
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// The maximum amount of workers used to run your tests. Can be specified as % or a number. E.g. maxWorkers: 10% will use 10% of your CPU amount + 1 as the maximum worker number. maxWorkers: 2 will use a maximum of 2 workers.
|
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// maxWorkers: "50%",
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|
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// An array of directory names to be searched recursively up from the requiring module's location
|
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// moduleDirectories: [
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// "node_modules"
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// ],
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|
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// An array of file extensions your modules use
|
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// moduleFileExtensions: [
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// "js",
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// "json",
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// "jsx",
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// "ts",
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// "tsx",
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// "node"
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// ],
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|
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// A map from regular expressions to module names or to arrays of module names that allow to stub out resources with a single module
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// moduleNameMapper: {},
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|
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// An array of regexp pattern strings, matched against all module paths before considered 'visible' to the module loader
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// modulePathIgnorePatterns: [],
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|
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// Activates notifications for test results
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// notify: false,
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|
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// An enum that specifies notification mode. Requires { notify: true }
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// notifyMode: "failure-change",
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|
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// A preset that is used as a base for Jest's configuration
|
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// preset: undefined,
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|
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// Run tests from one or more projects
|
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// projects: undefined,
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|
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// Use this configuration option to add custom reporters to Jest
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// reporters: undefined,
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|
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// Automatically reset mock state between every test
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// resetMocks: false,
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|
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// Reset the module registry before running each individual test
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// resetModules: false,
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|
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// A path to a custom resolver
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// resolver: undefined,
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|
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// Automatically restore mock state between every test
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// restoreMocks: false,
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|
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// The root directory that Jest should scan for tests and modules within
|
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// rootDir: undefined,
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|
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// A list of paths to directories that Jest should use to search for files in
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// roots: [
|
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// "<rootDir>"
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// ],
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|
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// Allows you to use a custom runner instead of Jest's default test runner
|
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// runner: "jest-runner",
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|
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// The paths to modules that run some code to configure or set up the testing environment before each test
|
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// setupFiles: [],
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|
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// A list of paths to modules that run some code to configure or set up the testing framework before each test
|
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// setupFilesAfterEnv: [],
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|
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// The number of seconds after which a test is considered as slow and reported as such in the results.
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// slowTestThreshold: 5,
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|
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// A list of paths to snapshot serializer modules Jest should use for snapshot testing
|
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// snapshotSerializers: [],
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|
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// The test environment that will be used for testing
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testEnvironment: "node", |
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|
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// Options that will be passed to the testEnvironment
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// testEnvironmentOptions: {},
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|
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// Adds a location field to test results
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// testLocationInResults: false,
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|
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// The glob patterns Jest uses to detect test files
|
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// testMatch: [
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// "**/__tests__/**/*.[jt]s?(x)",
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// "**/?(*.)+(spec|test).[tj]s?(x)"
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// ],
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|
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// An array of regexp pattern strings that are matched against all test paths, matched tests are skipped
|
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// testPathIgnorePatterns: [
|
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// "/node_modules/"
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// ],
|
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|
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// The regexp pattern or array of patterns that Jest uses to detect test files
|
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// testRegex: [],
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|
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// This option allows the use of a custom results processor
|
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// testResultsProcessor: undefined,
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|
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// This option allows use of a custom test runner
|
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// testRunner: "jasmine2",
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|
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// This option sets the URL for the jsdom environment. It is reflected in properties such as location.href
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// testURL: "http://localhost",
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|
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// Setting this value to "fake" allows the use of fake timers for functions such as "setTimeout"
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// timers: "real",
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|
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// A map from regular expressions to paths to transformers
|
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// transform: undefined,
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|
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// An array of regexp pattern strings that are matched against all source file paths, matched files will skip transformation
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// transformIgnorePatterns: [
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// "/node_modules/",
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// "\\.pnp\\.[^\\/]+$"
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// ],
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|
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// An array of regexp pattern strings that are matched against all modules before the module loader will automatically return a mock for them
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// unmockedModulePathPatterns: undefined,
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|
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// Indicates whether each individual test should be reported during the run
|
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// verbose: undefined,
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|
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// An array of regexp patterns that are matched against all source file paths before re-running tests in watch mode
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// watchPathIgnorePatterns: [],
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|
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// Whether to use watchman for file crawling
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// watchman: true,
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}; |
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@ -0,0 +1,26 @@ |
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{ |
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"name": "@budibase/string-templates", |
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"version": "0.5.3", |
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"description": "Handlebars wrapper for Budibase templating.", |
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"main": "dist/bundle.js", |
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"module": "dist/bundle.js", |
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"license": "AGPL-3.0", |
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"types": "dist/index.d.ts", |
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"scripts": { |
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"build": "rollup -c", |
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"dev:builder": "tsc && rollup -cw", |
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"test": "jest" |
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}, |
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"dependencies": { |
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"handlebars": "^4.7.6" |
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}, |
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"devDependencies": { |
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"rollup": "^2.36.2", |
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"rollup-plugin-commonjs": "^10.1.0", |
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"rollup-plugin-node-builtins": "^2.1.2", |
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"rollup-plugin-node-globals": "^1.4.0", |
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"rollup-plugin-node-resolve": "^5.2.0", |
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"typescript": "^4.1.3", |
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"jest": "^26.6.3" |
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} |
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} |
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@ -0,0 +1,24 @@ |
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import commonjs from "rollup-plugin-commonjs" |
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import nodeResolve from "rollup-plugin-node-resolve" |
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import globals from "rollup-plugin-node-globals" |
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import builtins from "rollup-plugin-node-builtins" |
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export default { |
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input: "src/index.js", |
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output: { |
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file: "dist/bundle.js", |
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format: "umd", |
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name: "string-templates", |
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exports: "named", |
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globals: { |
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"fs": "fs", |
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}, |
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}, |
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external: ["fs"], |
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plugins: [ |
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nodeResolve({ preferBuiltins: false }), |
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commonjs(), |
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globals(), |
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builtins(), |
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], |
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} |
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@ -0,0 +1,91 @@ |
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const { HelperFunctions } = require("./helpers/index") |
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const HBS_CLEANING_REGEX = /{{[^}}]*}}/g |
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const ALPHA_NUMERIC_REGEX = /^[A-Za-z0-9]+$/g |
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function isAlphaNumeric(char) { |
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return char.match(ALPHA_NUMERIC_REGEX) |
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} |
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function swapStrings(string, start, length, swap) { |
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return string.slice(0, start) + swap + string.slice(start + length) |
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} |
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|
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function handleCleaner(string, match, fn) { |
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const output = fn(match) |
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const idx = string.indexOf(match) |
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return swapStrings(string, idx, match.length, output) |
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} |
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|
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function swapToDotNotation(statement) { |
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let startBraceIdx = statement.indexOf("[") |
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let lastIdx = 0 |
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while (startBraceIdx !== -1) { |
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// if the character previous to the literal specifier is alpha-numeric this should happen
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if (isAlphaNumeric(statement.charAt(startBraceIdx - 1))) { |
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statement = swapStrings(statement, startBraceIdx + lastIdx, 1, ".[") |
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} |
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lastIdx = startBraceIdx + 1 |
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startBraceIdx = statement.substring(lastIdx + 1).indexOf("[") |
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} |
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return statement |
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} |
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|
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function handleSpacesInProperties(statement) { |
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// exclude helpers and brackets, regex will only find double brackets
|
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const exclusions = HelperFunctions.concat(["{{", "}}"]) |
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// find all the parts split by spaces
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const splitBySpaces = statement.split(" ") |
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// remove the excluded elements
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const propertyParts = splitBySpaces.filter(part => exclusions.indexOf(part) === -1) |
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// rebuild to get the full property
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const fullProperty = propertyParts.join(" ") |
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// now work out the dot notation layers and split them up
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const propertyLayers = fullProperty.split(".") |
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// find the layers which need to be wrapped and wrap them
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for (let layer of propertyLayers) { |
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if (layer.indexOf(" ") !== -1) { |
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statement = swapStrings(statement, statement.indexOf(layer), layer.length, `[${layer}]`) |
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} |
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} |
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// remove the edge case of double brackets being entered (in-case user already has specified)
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return statement.replace(/\[\[/g, "[").replace(/]]/g, "]") |
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} |
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|
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function finalise(statement) { |
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let insideStatement = statement.slice(2, statement.length - 2) |
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if (insideStatement.charAt(0) === " ") { |
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insideStatement = insideStatement.slice(1) |
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} |
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if (insideStatement.charAt(insideStatement.length - 1) === " ") { |
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insideStatement = insideStatement.slice(0, insideStatement.length - 1) |
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} |
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return `{{ all (${insideStatement}) }}` |
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} |
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|
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/** |
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* When running handlebars statements to execute on the context of the automation it possible user's may input handlebars |
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* in a few different forms, some of which are invalid but are logically valid. An example of this would be the handlebars |
|||
* statement "{{steps[0].revision}}" here it is obvious the user is attempting to access an array or object using array |
|||
* like operators. These are not supported by handlebars and therefore the statement will fail. This function will clean up |
|||
* the handlebars statement so it instead reads as "{{steps.0.revision}}" which is valid and will work. It may also be expanded |
|||
* to include any other handlebars statement cleanup that has been deemed necessary for the system. |
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* |
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* @param {string} string The string which *may* contain handlebars statements, it is OK if it does not contain any. |
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* @returns {string} The string that was input with cleaned up handlebars statements as required. |
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*/ |
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module.exports.cleanHandlebars = (string) => { |
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let cleaners = [swapToDotNotation, handleSpacesInProperties, finalise] |
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for (let cleaner of cleaners) { |
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// re-run search each time incase previous cleaner update/removed a match
|
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let regex = new RegExp(HBS_CLEANING_REGEX) |
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let matches = string.match(regex) |
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if (matches == null) { |
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continue |
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} |
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for (let match of matches) { |
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string = handleCleaner(string, match, cleaner) |
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} |
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} |
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return string |
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} |
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@ -0,0 +1,19 @@ |
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class Helper { |
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constructor(name, fn) { |
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this.name = name |
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this.fn = fn |
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} |
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|
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register(handlebars) { |
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// wrap the function so that no helper can cause handlebars to break
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handlebars.registerHelper(this.name, value => { |
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return this.fn(value) || value |
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}) |
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} |
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|
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unregister(handlebars) { |
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handlebars.unregisterHelper(this.name) |
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} |
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} |
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|
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module.exports = Helper |
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const Helper = require("./Helper") |
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const { SafeString } = require("handlebars") |
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|
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const HTML_SWAPS = { |
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"<": "<", |
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">": ">", |
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} |
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|
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const HelperFunctionBuiltin = [ |
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"#if", |
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"#unless", |
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"#each", |
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"#with", |
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"lookup", |
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"log" |
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] |
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|
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const HelperFunctionNames = { |
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OBJECT: "object", |
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ALL: "all", |
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} |
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|
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const HELPERS = [ |
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// external helpers
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new Helper(HelperFunctionNames.OBJECT, value => { |
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return new SafeString(JSON.stringify(value)) |
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}), |
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// this help is applied to all statements
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new Helper(HelperFunctionNames.ALL, value => { |
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let text = new SafeString(unescape(value).replace(/&/g, '&')) |
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if (text == null || typeof text !== "string") { |
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return text |
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} |
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return text.replace(/[<>]/g, tag => { |
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return HTML_SWAPS[tag] || tag |
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}) |
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}) |
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] |
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|
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module.exports.HelperFunctions = Object.values(HelperFunctionNames).concat(HelperFunctionBuiltin) |
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|
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module.exports.registerAll = handlebars => { |
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for (let helper of HELPERS) { |
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helper.register(handlebars) |
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} |
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} |
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|
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module.exports.unregisterAll = handlebars => { |
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for (let helper of HELPERS) { |
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helper.unregister(handlebars) |
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} |
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} |
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@ -0,0 +1,102 @@ |
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const handlebars = require("handlebars") |
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const { registerAll } = require("./helpers/index") |
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const { cleanHandlebars } = require("./cleaning") |
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|
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const hbsInstance = handlebars.create() |
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registerAll(hbsInstance) |
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|
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/** |
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* utility function to check if the object is valid |
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*/ |
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function testObject(object) { |
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// JSON stringify will fail if there are any cycles, stops infinite recursion
|
|||
try { |
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JSON.stringify(object) |
|||
} catch (err) { |
|||
throw "Unable to process inputs to JSON, cannot recurse" |
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} |
|||
} |
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|
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/** |
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* Given an input object this will recurse through all props to try and update any handlebars statements within. |
|||
* @param {object|array} object The input structure which is to be recursed, it is important to note that |
|||
* if the structure contains any cycles then this will fail. |
|||
* @param {object} context The context that handlebars should fill data from. |
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* @returns {Promise<object|array>} The structure input, as fully updated as possible. |
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*/ |
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module.exports.processObject = async (object, context) => { |
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testObject(object) |
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for (let key of Object.keys(object)) { |
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let val = object[key] |
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if (typeof val === "string") { |
|||
object[key] = await module.exports.processString(object[key], context) |
|||
} else if (typeof val === "object") { |
|||
object[key] = await module.exports.processObject(object[key], context) |
|||
} |
|||
} |
|||
return object |
|||
} |
|||
|
|||
/** |
|||
* This will process a single handlebars containing string. If the string passed in has no valid handlebars statements |
|||
* then nothing will occur. |
|||
* @param {string} string The template string which is the filled from the context object. |
|||
* @param {object} context An object of information which will be used to enrich the string. |
|||
* @returns {Promise<string>} The enriched string, all templates should have been replaced if they can be. |
|||
*/ |
|||
module.exports.processString = async (string, context) => { |
|||
// TODO: carry out any async calls before carrying out async call
|
|||
return module.exports.processStringSync(string, context) |
|||
} |
|||
|
|||
/** |
|||
* Given an input object this will recurse through all props to try and update any handlebars statements within. This is |
|||
* a pure sync call and therefore does not have the full functionality of the async call. |
|||
* @param {object|array} object The input structure which is to be recursed, it is important to note that |
|||
* if the structure contains any cycles then this will fail. |
|||
* @param {object} context The context that handlebars should fill data from. |
|||
* @returns {object|array} The structure input, as fully updated as possible. |
|||
*/ |
|||
module.exports.processObjectSync = (object, context) => { |
|||
testObject(object) |
|||
for (let key of Object.keys(object)) { |
|||
let val = object[key] |
|||
if (typeof val === "string") { |
|||
object[key] = module.exports.processStringSync(object[key], context) |
|||
} else if (typeof val === "object") { |
|||
object[key] = module.exports.processObjectSync(object[key], context) |
|||
} |
|||
} |
|||
return object |
|||
} |
|||
|
|||
/** |
|||
* This will process a single handlebars containing string. If the string passed in has no valid handlebars statements |
|||
* then nothing will occur. This is a pure sync call and therefore does not have the full functionality of the async call. |
|||
* @param {string} string The template string which is the filled from the context object. |
|||
* @param {object} context An object of information which will be used to enrich the string. |
|||
* @returns {string} The enriched string, all templates should have been replaced if they can be. |
|||
*/ |
|||
module.exports.processStringSync = (string, context) => { |
|||
if (typeof string !== "string") { |
|||
throw "Cannot process non-string types." |
|||
} |
|||
console.log(string) |
|||
console.log(context) |
|||
let template |
|||
string = cleanHandlebars(string) |
|||
console.log(string) |
|||
// this does not throw an error when template can't be fulfilled, have to try correct beforehand
|
|||
template = hbsInstance.compile(string) |
|||
return template(context) |
|||
} |
|||
|
|||
/** |
|||
* Errors can occur if a user of this library attempts to use a helper that has not been added to the system, these errors |
|||
* can be captured to alert the user of the mistake. |
|||
* @param {function} handler a function which will be called every time an error occurs when processing a handlebars |
|||
* statement. |
|||
*/ |
|||
module.exports.errorEvents = handler => { |
|||
hbsInstance.registerHelper("helperMissing", handler) |
|||
} |
|||
@ -0,0 +1,69 @@ |
|||
const { |
|||
processObject, |
|||
processString, |
|||
} = require("../src/index") |
|||
|
|||
describe("Test that the string processing works correctly", () => { |
|||
it("should process a basic template string", async () => { |
|||
const output = await processString("templating is {{ adjective }}", { |
|||
adjective: "easy" |
|||
}) |
|||
expect(output).toBe("templating is easy") |
|||
}) |
|||
|
|||
it("should fail gracefully when wrong type passed in", async () => { |
|||
let error = null |
|||
try { |
|||
await processString(null, null) |
|||
} catch (err) { |
|||
error = err |
|||
} |
|||
expect(error).not.toBeNull() |
|||
}) |
|||
}) |
|||
|
|||
describe("Test that the object processing works correctly", () => { |
|||
it("should be able to process an object with some template strings", async () => { |
|||
const output = await processObject({ |
|||
first: "thing is {{ adjective }}", |
|||
second: "thing is bad", |
|||
third: "we are {{ adjective }} {{ noun }}", |
|||
}, { |
|||
adjective: "easy", |
|||
noun: "people", |
|||
}) |
|||
expect(output.first).toBe("thing is easy") |
|||
expect(output.second).toBe("thing is bad") |
|||
expect(output.third).toBe("we are easy people") |
|||
}) |
|||
|
|||
it("should be able to handle arrays of string templates", async () => { |
|||
const output = await processObject(["first {{ noun }}", "second {{ noun }}"], { |
|||
noun: "person" |
|||
}) |
|||
expect(output[0]).toBe("first person") |
|||
expect(output[1]).toBe("second person") |
|||
}) |
|||
|
|||
it("should fail gracefully when object passed in has cycles", async () => { |
|||
let error = null |
|||
try { |
|||
const innerObj = { a: "thing {{ a }}" } |
|||
innerObj.b = innerObj |
|||
await processObject(innerObj, { a: 1 }) |
|||
} catch (err) { |
|||
error = err |
|||
} |
|||
expect(error).not.toBeNull() |
|||
}) |
|||
|
|||
it("should fail gracefully when wrong type is passed in", async () => { |
|||
let error = null |
|||
try { |
|||
await processObject(null, null) |
|||
} catch (err) { |
|||
error = err |
|||
} |
|||
expect(error).not.toBeNull() |
|||
}) |
|||
}) |
|||
@ -0,0 +1,35 @@ |
|||
const { |
|||
processString, |
|||
} = require("../src/index") |
|||
|
|||
describe("Handling context properties with spaces in their name", () => { |
|||
it("should allow through literal specifiers", async () => { |
|||
const output = await processString("test {{ [test thing] }}", { |
|||
"test thing": 1 |
|||
}) |
|||
expect(output).toBe("test 1") |
|||
}) |
|||
|
|||
it("should convert to dot notation where required", async () => { |
|||
const output = await processString("test {{ test[0] }}", { |
|||
test: [2] |
|||
}) |
|||
expect(output).toBe("test 2") |
|||
}) |
|||
|
|||
it("should be able to handle a property with a space in its name", async () => { |
|||
const output = await processString("hello my name is {{ person name }}", { |
|||
"person name": "Mike", |
|||
}) |
|||
expect(output).toBe("hello my name is Mike") |
|||
}) |
|||
|
|||
it("should be able to handle an object with layers that requires escaping", async () => { |
|||
const output = await processString("testcase {{ testing.test case }}", { |
|||
testing: { |
|||
"test case": 1 |
|||
} |
|||
}) |
|||
expect(output).toBe("testcase 1") |
|||
}) |
|||
}) |
|||
@ -0,0 +1,12 @@ |
|||
const { |
|||
processString, |
|||
} = require("../src/index") |
|||
|
|||
describe("test the custom helpers we have applied", () => { |
|||
it("should be able to use the object helper", async () => { |
|||
const output = await processString("object is {{ object obj }}", { |
|||
obj: { a: 1 }, |
|||
}) |
|||
expect(output).toBe("object is {\"a\":1}") |
|||
}) |
|||
}) |
|||
@ -0,0 +1,10 @@ |
|||
{ |
|||
"include": ["src/**/*"], |
|||
|
|||
"compilerOptions": { |
|||
"allowJs": true, |
|||
"declaration": true, |
|||
"emitDeclarationOnly": true, |
|||
"outDir": "dist" |
|||
} |
|||
} |
|||
File diff suppressed because it is too large
@ -0,0 +1,12 @@ |
|||
{ |
|||
"globals": { |
|||
"emit": true, |
|||
"key": true |
|||
}, |
|||
"env": { |
|||
"node": true |
|||
}, |
|||
"extends": ["eslint:recommended"], |
|||
"rules": { |
|||
} |
|||
} |
|||
Loading…
Reference in new issue