mermaid/docs/config/setup/modules/mermaidAPI.md

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Module: mermaidAPI

Interfaces

• ParseOptions
• RenderResult

References

default

Renames and re-exports mermaidAPI

Type Aliases

D3Element

Ƭ D3Element: any

Defined in

mermaidAPI.ts:81

Variables

mermaidAPI

• Const mermaidAPI: Readonly<{ defaultConfig: MermaidConfig = configApi.defaultConfig; getConfig: () => MermaidConfig = configApi.getConfig; getDiagramFromText: (text: string) => Promise<Diagram> ; getSiteConfig: () => MermaidConfig = configApi.getSiteConfig; globalReset: () => void ; initialize: (options: MermaidConfig) => void ; parse: (text: string, parseOptions?: ParseOptions) => Promise<boolean> ; parseDirective: (p: any, statement: string, context: string, type: string) => void ; render: (id: string, text: string, svgContainingElement?: Element) => Promise<RenderResult> ; reset: () => void ; setConfig: (conf: MermaidConfig) => MermaidConfig = configApi.setConfig; updateSiteConfig: (conf: MermaidConfig) => MermaidConfig = configApi.updateSiteConfig }>

mermaidAPI configuration defaults

const config = {
  theme: 'default',
  logLevel: 'fatal',
  securityLevel: 'strict',
  startOnLoad: true,
  arrowMarkerAbsolute: false,

  er: {
    diagramPadding: 20,
    layoutDirection: 'TB',
    minEntityWidth: 100,
    minEntityHeight: 75,
    entityPadding: 15,
    stroke: 'gray',
    fill: 'honeydew',
    fontSize: 12,
    useMaxWidth: true,
  },
  flowchart: {
    diagramPadding: 8,
    htmlLabels: true,
    curve: 'basis',
  },
  sequence: {
    diagramMarginX: 50,
    diagramMarginY: 10,
    actorMargin: 50,
    width: 150,
    height: 65,
    boxMargin: 10,
    boxTextMargin: 5,
    noteMargin: 10,
    messageMargin: 35,
    messageAlign: 'center',
    mirrorActors: true,
    bottomMarginAdj: 1,
    useMaxWidth: true,
    rightAngles: false,
    showSequenceNumbers: false,
  },
  gantt: {
    titleTopMargin: 25,
    barHeight: 20,
    barGap: 4,
    topPadding: 50,
    leftPadding: 75,
    gridLineStartPadding: 35,
    fontSize: 11,
    fontFamily: '"Open Sans", sans-serif',
    numberSectionStyles: 4,
    axisFormat: '%Y-%m-%d',
    topAxis: false,
    displayMode: '',
  },
};
mermaid.initialize(config);

Defined in

mermaidAPI.ts:668

Functions

appendDivSvgG

▸ appendDivSvgG(parentRoot, id, enclosingDivId, divStyle?, svgXlink?): any

Append an enclosing div, then svg, then g (group) to the d3 parentRoot. Set attributes. Only set the style attribute on the enclosing div if divStyle is given. Only set the xmlns:xlink attribute on svg if svgXlink is given. Return the last node appended

Parameters

Name	Type	Description
parentRoot	any	the d3 node to append things to
id	string	the value to set the id attr to
enclosingDivId	string	the id to set the enclosing div to
divStyle?	string	if given, the style to set the enclosing div to
svgXlink?	string	if given, the link to set the new svg element to

Returns

any

• returns the parentRoot that had nodes appended

Defined in

mermaidAPI.ts:309

---

cleanUpSvgCode

▸ cleanUpSvgCode(svgCode?, inSandboxMode, useArrowMarkerUrls): string

Clean up svgCode. Do replacements needed

Parameters

Name	Type	Default value	Description
svgCode	string	''	the code to clean up
inSandboxMode	boolean	undefined	security level
useArrowMarkerUrls	boolean	undefined	should arrow marker's use full urls? (vs. just the anchors)

Returns

string

the cleaned up svgCode

Defined in

mermaidAPI.ts:255

---

createCssStyles

▸ createCssStyles(config, graphType, classDefs?): string

Create the user styles

Parameters

Name	Type	Description
config	MermaidConfig	configuration that has style and theme settings to use
graphType	string	used for checking if classDefs should be applied
classDefs	undefined | null | Record<string, DiagramStyleClassDef>	the classDefs in the diagram text. Might be null if none were defined. Usually is the result of a call to getClasses(...)

Returns

string

the string with all the user styles

Defined in

mermaidAPI.ts:184

---

createUserStyles

▸ createUserStyles(config, graphType, classDefs, svgId): string

Parameters

Name	Type
config	MermaidConfig
graphType	string
classDefs	Record<string, DiagramStyleClassDef>
svgId	string

Returns

string

Defined in

mermaidAPI.ts:232

---

cssImportantStyles

▸ cssImportantStyles(cssClass, element, cssClasses?): string

Create a CSS style that starts with the given class name, then the element, with an enclosing block that has each of the cssClasses followed by !important;

Parameters

Name	Type	Default value	Description
cssClass	string	undefined	CSS class name
element	string	undefined	CSS element
cssClasses	string[]	[]	list of CSS styles to append after the element

Returns

string

• the constructed string

Defined in

mermaidAPI.ts:168

---

decodeEntities

▸ decodeEntities(text): string

Parameters

Name	Type	Description
text	string	text to be decoded

Returns

string

Defined in

mermaidAPI.ts:154

---

encodeEntities

▸ encodeEntities(text): string

Parameters

Name	Type	Description
text	string	text to be encoded

Returns

string

Defined in

mermaidAPI.ts:125

---

putIntoIFrame

▸ putIntoIFrame(svgCode?, svgElement?): string

Put the svgCode into an iFrame. Return the iFrame code

Parameters

Name	Type	Default value	Description
svgCode	string	''	the svg code to put inside the iFrame
svgElement?	any	undefined	the d3 node that has the current svgElement so we can get the height from it

Returns

string

• the code with the iFrame that now contains the svgCode TODO replace btoa(). Replace with buf.toString('base64')?

Defined in

mermaidAPI.ts:286

---

removeExistingElements

▸ removeExistingElements(doc, id, divId, iFrameId): void

Remove any existing elements from the given document

Parameters

Name	Type	Description
doc	Document	the document to removed elements from
id	string	id for any existing SVG element
divId	string	-
iFrameId	string	-

Returns

void

Defined in

mermaidAPI.ts:359