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Merge pull request #3240 from mermaid-js/3061_refactoring_and_modular…
…isation Using diagram api to add gitGraph
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,74 @@ | ||
| /** | ||
| * @function assignWithDepth Extends the functionality of {@link ObjectConstructor.assign} with the | ||
| * ability to merge arbitrary-depth objects For each key in src with path `k` (recursively) | ||
| * performs an Object.assign(dst[`k`], src[`k`]) with a slight change from the typical handling of | ||
| * undefined for dst[`k`]: instead of raising an error, dst[`k`] is auto-initialized to {} and | ||
| * effectively merged with src[`k`]<p> Additionally, dissimilar types will not clobber unless the | ||
| * config.clobber parameter === true. Example: | ||
| * | ||
| * ```js | ||
| * let config_0 = { foo: { bar: 'bar' }, bar: 'foo' }; | ||
| * let config_1 = { foo: 'foo', bar: 'bar' }; | ||
| * let result = assignWithDepth(config_0, config_1); | ||
| * console.log(result); | ||
| * //-> result: { foo: { bar: 'bar' }, bar: 'bar' } | ||
| * ``` | ||
| * | ||
| * Traditional Object.assign would have clobbered foo in config_0 with foo in config_1. If src is a | ||
| * destructured array of objects and dst is not an array, assignWithDepth will apply each element | ||
| * of src to dst in order. | ||
| * @param dst | ||
| * @param src | ||
| * @param config | ||
| * @param dst | ||
| * @param src | ||
| * @param config | ||
| * @param dst | ||
| * @param src | ||
| * @param config | ||
| * @param {any} dst - The destination of the merge | ||
| * @param {any} src - The source object(s) to merge into destination | ||
| * @param {{ depth: number; clobber: boolean }} [config={ depth: 2, clobber: false }] - Depth: depth | ||
| * to traverse within src and dst for merging - clobber: should dissimilar types clobber (default: | ||
| * { depth: 2, clobber: false }). Default is `{ depth: 2, clobber: false }` | ||
| * @returns {any} | ||
| */ | ||
| const assignWithDepth = function (dst, src, config) { | ||
| const { depth, clobber } = Object.assign({ depth: 2, clobber: false }, config); | ||
| if (Array.isArray(src) && !Array.isArray(dst)) { | ||
| src.forEach((s) => assignWithDepth(dst, s, config)); | ||
| return dst; | ||
| } else if (Array.isArray(src) && Array.isArray(dst)) { | ||
| src.forEach((s) => { | ||
| if (dst.indexOf(s) === -1) { | ||
| dst.push(s); | ||
| } | ||
| }); | ||
| return dst; | ||
| } | ||
| if (typeof dst === 'undefined' || depth <= 0) { | ||
| if (dst !== undefined && dst !== null && typeof dst === 'object' && typeof src === 'object') { | ||
| return Object.assign(dst, src); | ||
| } else { | ||
| return src; | ||
| } | ||
| } | ||
| if (typeof src !== 'undefined' && typeof dst === 'object' && typeof src === 'object') { | ||
| Object.keys(src).forEach((key) => { | ||
| if ( | ||
| typeof src[key] === 'object' && | ||
| (dst[key] === undefined || typeof dst[key] === 'object') | ||
| ) { | ||
| if (dst[key] === undefined) { | ||
| dst[key] = Array.isArray(src[key]) ? [] : {}; | ||
| } | ||
| dst[key] = assignWithDepth(dst[key], src[key], { depth: depth - 1, clobber }); | ||
| } else if (clobber || (typeof dst[key] !== 'object' && typeof src[key] !== 'object')) { | ||
| dst[key] = src[key]; | ||
| } | ||
| }); | ||
| } | ||
| return dst; | ||
| }; | ||
|
|
||
| export default assignWithDepth; |
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