Implement extrapolate function in Javascript

I need to implement the Extrapolate function like in [login to view URL]([login to view URL]) and several test cases to test your function. My MAXIMUM budget is $40. The function will be in JS and like function dst_extrapolateData(inputDataset, stepData){ ........ return outputDataset; } ## intputDataset and outputDataset has the following schema: { schema: { <column_name>: { type: '<column_data_type>', // data type of the column. The following types are accepted: 'number', 'string', 'boolean', 'datetime', 'uuid', 'float' }, ... }, rows: [ [...], ] } here is an example of a dataset: { schema: { id: { type: 'datetime', // data type of the column. The following types are accepted: 'number', 'string', 'boolean', 'datetime', 'uuid', 'float' }, activityname: { type: 'string', }, count: { type: 'number', } }, rows: [ ['2019-09-01', 'Comment', 100], ['2019-09-01', 'Like', 350], ['2019-09-01', 'Login', 30], ['2019-09-01', 'Login', 45] ] } ## stepData has the following schema: { // number of steps numberOfSteps: <number>, steps: [ // {column, shape, createNew} // column: extrapolated column, shape: 'linear', 'cubic', or 'quadratic', createNew: true to create a new column; otherwise false ] } here is an example of the stepData: { numberOfSteps: 30, steps: [ {column: 'count', shape: 'cubic', createNew: true} ] }